关于谷歌浏览器input框,保存密码后,输入框颜色变成黄色的解决方法

本人在工作中遇到这个问题,即在谷歌浏览器预览自己的登录页面,保存密码后,输入框颜色会变成黄色,原因是因为chrome默认会给自动填充的input表单加上input:-webkit-autofill私有属性。那如何去掉黄色的背景颜色,经过在网上搜索,最终使用了如下方法: input:-webkit-autofill{ -webkit-box-shadow: 0 0 0px 1000px white inset;//使用足够大的纯色阴影来覆盖input输入框黄色背景颜色 border:1px solid #666 !important;//根据自己的输入框边框设置 }
作者: 小小柠
链接:http://www.imooc.com/article/9821
来源:慕课网

46 个非常有用的 PHP 代码片段(二)

 http://www.oschina.net/question/2012764_246023

链接:http://www.imooc.com/article/1376

在编写代码的时候有个神奇的工具总是好的!下面这里收集了 40+ PHP 代码片段,可以帮助你开发 PHP 项目。

这些 PHP 片段对于 PHP 初学者也非常有帮助,非常容易学习,让我们开始学习吧~

1. 发送 SMS

在开发 Web 或者移动应用的时候,经常会遇到需要发送 SMS 给用户,或者因为登录原因,或者是为了发送信息。下面的 PHP 代码就实现了发送 SMS 的功能。

为了使用任何的语言发送 SMS,需要一个 SMS gateway。大部分的 SMS 会提供一个 API,这里是使用MSG91 作为 SMS gateway。

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
function send_sms($mobile,$msg)
{
$authKey "XXXXXXXXXXX";
date_default_timezone_set("Asia/Kolkata");
$date strftime("%Y-%m-%d %H:%M:%S");
//Multiple mobiles numbers separated by comma
$mobileNumber $mobile;
 
//Sender ID,While using route4 sender id should be 6 characters long.
$senderId "IKOONK";
 
//Your message to send, Add URL encoding here.
$message = urlencode($msg);
 
//Define route 
$route "template";
//Prepare you post parameters
$postData array(
    'authkey' => $authKey,
    'mobiles' => $mobileNumber,
    'message' => $message,
    'sender' => $senderId,
    'route' => $route
);
 
//API URL
$url="https://control.msg91.com/sendhttp.php";
 
// init the resource
$ch = curl_init();
curl_setopt_array($charray(
    CURLOPT_URL => $url,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_POST => true,
    CURLOPT_POSTFIELDS => $postData
    //,CURLOPT_FOLLOWLOCATION => true
));
 
 
//Ignore SSL certificate verification
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
 
 
//get response
$output = curl_exec($ch);
//Print error if any
if(curl_errno($ch))
{
    echo 'error:' . curl_error($ch);
}
 
curl_close($ch);
}

其中“$authKey = “XXXXXXXXXXX”;”需要你输入你的密码,“$senderId = “IKOONK”;”需要你输入你的 SenderID。当输入移动号码的时候需要指定国家代码 (比如,美国是 1,印度是 91 )。

语法:

1
2
3
4
5
<?php
$message "Hello World";
$mobile "918112998787";
send_sms($mobile,$message);
?>

2. 使用 mandrill 发送邮件

Mandrill 是一款强大的 SMTP 提供器。开发者倾向于使用一个第三方 SMTP provider 来获取更好的收件交付。

下面的函数中,你需要把 “Mandrill.php” 放在同一个文件夹,作为 PHP 文件,这样就可以使用TA来发送邮件。

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
function send_email($to_email,$subject,$message1)
{
require_once 'Mandrill.php';
$apikey 'XXXXXXXXXX'//specify your api key here
$mandrill new Mandrill($apikey);
 
$message new stdClass();
$message->html = $message1;
$message->text = $message1;
$message->subject = $subject;
$message->from_email = "blog@koonk.com";//Sender Email
$message->from_name  = "KOONK";//Sender Name
$message->to = array(array("email" => $to_email));
$message->track_opens = true;
 
$response $mandrill->messages->send($message);
}

“$apikey = ‘XXXXXXXXXX’; //specify your api key here”这里需要你指定你的 API 密钥(从 Mandrill 账户中获得)。

语法:

1
2
3
4
5
6
<?php
$to "abc@example.com";
$subject "This is a test email";
$message "Hello World!";
send_email($to,$subject,$message);
?>

为了达到最好的效果,最好按照 Mandrill 的教程去配置 DNS。

3. PHP 函数:阻止 SQL 注入

SQL 注入或者 SQLi 常见的攻击网站的手段,使用下面的代码可以帮助你防止这些工具。

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
function clean($input)
{
    if (is_array($input))
    {
        foreach ($input as $key => $val)
         {
            $output[$key] = clean($val);
            // $output[$key] = $this->clean($val);
        }
    }
    else
    {
        $output = (string) $input;
        // if magic quotes is on then use strip slashes
        if (get_magic_quotes_gpc()) 
        {
            $output stripslashes($output);
        }
        // $output = strip_tags($output);
        $output = htmlentities($output, ENT_QUOTES, 'UTF-8');
    }
// return the clean text
    return $output;
}

语法:

1
2
3
4
5
<?php
$text "<script>alert(1)</script>";
$text = clean($text);
echo $text;
?>

4. 检测用户位置

使用下面的函数,可以检测用户是在哪个城市访问你的网站

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
function detect_city($ip) {
        
        $default 'UNKNOWN';
 
        $curlopt_useragent 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6 (.NET CLR 3.5.30729)';
        
        $url 'http://ipinfodb.com/ip_locator.php?ip=' . urlencode($ip);
        $ch = curl_init();
        
        $curl_opt array(
            CURLOPT_FOLLOWLOCATION  => 1,
            CURLOPT_HEADER      => 0,
            CURLOPT_RETURNTRANSFER  => 1,
            CURLOPT_USERAGENT   => $curlopt_useragent,
            CURLOPT_URL       => $url,
            CURLOPT_TIMEOUT         => 1,
            CURLOPT_REFERER         => 'http://' $_SERVER['HTTP_HOST'],
        );
        
        curl_setopt_array($ch$curl_opt);
        
        $content = curl_exec($ch);
        
        if (!is_null($curl_info)) {
            $curl_info = curl_getinfo($ch);
        }
        
        curl_close($ch);
        
        if ( preg_match('{<li>City : ([^<]*)</li>}i'$content$regs) )  {
            $city $regs[1];
        }
        if ( preg_match('{<li>State/Province : ([^<]*)</li>}i'$content$regs) )  {
            $state $regs[1];
        }
 
        if$city!='' && $state!='' ){
          $location $city ', ' $state;
          return $location;
        }else{
          return $default
        }
        
    }

语法:

1
2
3
4
5
<?php
$ip $_SERVER['REMOTE_ADDR'];
$city = detect_city($ip);
echo $city;
?>

5. 获取 Web 页面的源代码

使用下面的函数,可以获取任意 Web 页面的 HTML 代码

1
2
3
4
5
6
7
8
9
function display_sourcecode($url)
{
$lines = file($url);
$output "";
foreach ($lines as $line_num => $line) { 
    // loop thru each line and prepend line numbers
    $output.= "Line #<b>{$line_num}</b> : " . htmlspecialchars($line) . "<br>\n";
}
}

语法:

1
2
3
4
5
<?php
$url "http://blog.koonk.com";
$source = display_sourcecode($url);
echo $source;
?>

6. 计算喜欢你的 Facebook 页面的用户

1
2
3
4
5
6
function fb_fan_count($facebook_name)
{
    $data = json_decode(file_get_contents("https://graph.facebook.com/".$facebook_name));
    $likes $data->likes;
    return $likes;
}

语法:

1
2
3
4
5
<?php
$page "koonktechnologies";
$count = fb_fan_count($page);
echo $count;
?>

7. 确定任意图片的主导颜色

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
function dominant_color($image)
{
$i = imagecreatefromjpeg($image);
for ($x=0;$x<imagesx($i);$x++) {
    for ($y=0;$y<imagesy($i);$y++) {
        $rgb = imagecolorat($i,$x,$y);
        $r   = ($rgb >> 16) & 0xFF;
        $g   = ($rgb >>  & 0xFF;
        $b   $rgb & 0xFF;
        $rTotal += $r;
        $gTotal += $g;
        $bTotal += $b;
        $total++;
    }
}
$rAverage round($rTotal/$total);
$gAverage round($gTotal/$total);
$bAverage round($bTotal/$total);
}

8. whois 查询

使用下面的函数可以获取任何域名用户的完整细节

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
function whois_query($domain) {
 
    // fix the domain name:
    $domain strtolower(trim($domain));
    $domain = preg_replace('/^http:\/\//i'''$domain);
    $domain = preg_replace('/^www\./i'''$domain);
    $domain explode('/'$domain);
    $domain = trim($domain[0]);
 
    // split the TLD from domain name
    $_domain explode('.'$domain);
    $lst count($_domain)-1;
    $ext $_domain[$lst];
 
    // You find resources and lists 
    // like these on wikipedia: 
    //
    // http://de.wikipedia.org/wiki/Whois
    //
    $servers array(
        "biz" => "whois.neulevel.biz",
        "com" => "whois.internic.net",
        "us" => "whois.nic.us",
        "coop" => "whois.nic.coop",
        "info" => "whois.nic.info",
        "name" => "whois.nic.name",
        "net" => "whois.internic.net",
        "gov" => "whois.nic.gov",
        "edu" => "whois.internic.net",
        "mil" => "rs.internic.net",
        "int" => "whois.iana.org",
        "ac" => "whois.nic.ac",
        "ae" => "whois.uaenic.ae",
        "at" => "whois.ripe.net",
        "au" => "whois.aunic.net",
        "be" => "whois.dns.be",
        "bg" => "whois.ripe.net",
        "br" => "whois.registro.br",
        "bz" => "whois.belizenic.bz",
        "ca" => "whois.cira.ca",
        "cc" => "whois.nic.cc",
        "ch" => "whois.nic.ch",
        "cl" => "whois.nic.cl",
        "cn" => "whois.cnnic.net.cn",
        "cz" => "whois.nic.cz",
        "de" => "whois.nic.de",
        "fr" => "whois.nic.fr",
        "hu" => "whois.nic.hu",
        "ie" => "whois.domainregistry.ie",
        "il" => "whois.isoc.org.il",
        "in" => "whois.ncst.ernet.in",
        "ir" => "whois.nic.ir",
        "mc" => "whois.ripe.net",
        "to" => "whois.tonic.to",
        "tv" => "whois.tv",
        "ru" => "whois.ripn.net",
        "org" => "whois.pir.org",
        "aero" => "whois.information.aero",
        "nl" => "whois.domain-registry.nl"
    );
 
    if (!isset($servers[$ext])){
        die('Error: No matching nic server found!');
    }
 
    $nic_server $servers[$ext];
 
    $output '';
 
    // connect to whois server:
    if ($conn fsockopen ($nic_server, 43)) {
        fputs($conn$domain."\r\n");
        while(!feof($conn)) {
            $output .= fgets($conn,128);
        }
        fclose($conn);
    }
    else die('Error: Could not connect to ' $nic_server '!'); }
 
    return $output;
}

语法:

1
2
3
4
5
<?php
$domain "http://www.blog.koonk.com";
$result = whois_query($domain);
print_r($result);
?>

9. 验证邮箱地址

有时候,当在网站填写表单,用户可能会输入错误的邮箱地址,这个函数可以验证邮箱地址是否有效。

1
2
3
4
5
6
7
8
9
function is_validemail($email)
{
$check = 0;
if(filter_var($email,FILTER_VALIDATE_EMAIL))
{
$check = 1;
}
return $check;
}

语法:

1
2
3
4
5
6
<?php
$email "blog@koonk.com";
$check = is_validemail($email);
echo $check;
// If the output is 1, then email is valid.
?>

10. 获取用户的真实  IP

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
function getRealIpAddr()  
{  
    if (!emptyempty($_SERVER['HTTP_CLIENT_IP']))  
    {  
        $ip=$_SERVER['HTTP_CLIENT_IP'];  
    }  
    elseif (!emptyempty($_SERVER['HTTP_X_FORWARDED_FOR']))  
    //to check ip is pass from proxy  
    {  
        $ip=$_SERVER['HTTP_X_FORWARDED_FOR'];  
    }  
    else
    {  
        $ip=$_SERVER['REMOTE_ADDR'];  
    }  
    return $ip;  
}

语法:

1
2
3
4
<?php
$ip = getRealIpAddr();
echo $ip;
?>

11. 转换 URL:从字符串变成超链接

如果你正在开发论坛,博客或者是一个常规的表单提交,很多时候都要用户访问一个网站。使用这个函数,URL 字符串就可以自动的转换为超链接。

1
2
3
4
5
6
7
8
9
10
11
function makeClickableLinks($text
{  
 $text eregi_replace('(((f|ht){1}tp://)[-a-zA-Z0-9@:%_+.~#?&//=]+)',  
 '<a href="\1">\1</a>'$text);  
 $text eregi_replace('([[:space:]()[{}])(www.[-a-zA-Z0-9@:%_+.~#?&//=]+)',  
 '\1<a href="http://\2">\2</a>'$text);  
 $text eregi_replace('([_.0-9a-z-]+@([0-9a-z][0-9a-z-]+.)+[a-z]{2,3})',  
 '<a href="mailto:\1">\1</a>'$text);  
  
return $text;  
}

语法:

1
2
3
4
5
<?php
$text "This is my first post on http://blog.koonk.com";
$text = makeClickableLinks($text);
echo $text;
?>

12. 阻止多个 IP 访问你的网站

这个代码片段可以方便你禁止某些特定的 IP 地址访问你的网站

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
if ( !file_exists('blocked_ips.txt') ) {
 $deny_ips array(
  '127.0.0.1',
  '192.168.1.1',
  '83.76.27.9',
  '192.168.1.163'
 );
else {
 $deny_ips = file('blocked_ips.txt');
}
// read user ip adress:
$ip = isset($_SERVER['REMOTE_ADDR']) ? trim($_SERVER['REMOTE_ADDR']) : '';
 
// search current IP in $deny_ips array
if ( (array_search($ip$deny_ips))!== FALSE ) {
 // address is blocked:
 echo 'Your IP adress ('.$ip.') was blocked!';
 exit;
}

13. 强制性文件下载

如果你需要下载特定的文件而不用另开新窗口,下面的代码片段可以帮助你。

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
function force_download($file
    $dir      "../log/exports/"
    if ((isset($file))&&(file_exists($dir.$file))) { 
       header("Content-type: application/force-download"); 
       header('Content-Disposition: inline; filename="' $dir.$file '"'); 
       header("Content-Transfer-Encoding: Binary"); 
       header("Content-length: ".filesize($dir.$file)); 
       header('Content-Type: application/octet-stream'); 
       header('Content-Disposition: attachment; filename="' $file '"'); 
       readfile("$dir$file"); 
    else 
       echo "No file selected"
    
}

语法:

1
2
3
<php
force_download("image.jpg");
?>

14. 创建 JSON 数据

使用下面的 PHP 片段可以创建 JSON 数据,可以方便你创建移动应用的 Web 服务

1
2
$json_data array ('id'=>1,'name'=>"Mohit");
echo json_encode($json_data);

15. 压缩 zip 文件

使用下面的 PHP 片段可以即时压缩 zip 文件

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
function create_zip($files array(),$destination '',$overwrite = false) {  
    //if the zip file already exists and overwrite is false, return false  
    if(file_exists($destination) && !$overwrite) { return false; }  
    //vars  
    $valid_files array();  
    //if files were passed in...  
    if(is_array($files)) {  
        //cycle through each file  
        foreach($files as $file) {  
            //make sure the file exists  
            if(file_exists($file)) {  
                $valid_files[] = $file;  
            }  
        }  
    }  
    //if we have good files...  
    if(count($valid_files)) {  
        //create the archive  
        $zip new ZipArchive();  
        if($zip->open($destination,$overwrite ? ZIPARCHIVE::OVERWRITE : ZIPARCHIVE::CREATE) !== true) {  
            return false;  
        }  
        //add the files  
        foreach($valid_files as $file) {  
            $zip->addFile($file,$file);  
        }  
        //debug  
        //echo 'The zip archive contains ',$zip->numFiles,' files with a status of ',$zip->status;  
          
        //close the zip -- done!  
        $zip->close();  
          
        //check to make sure the file exists  
        return file_exists($destination);  
    }  
    else
    {  
        return false;  
    }  
}

语法:

1
2
3
4
<?php
$files=array('file1.jpg', 'file2.jpg', 'file3.gif');  
create_zip($files, 'myzipfile.zip', true);
?>

16. 解压文件

1
2
3
4
5
6
7
8
9
10
11
12
13
14
function unzip($location,$newLocation)
{
        if(exec("unzip $location",$arr)){
            mkdir($newLocation);
            for($i = 1;$i< count($arr);$i++){
                $file = trim(preg_replace("~inflating: ~","",$arr[$i]));
                copy($location.'/'.$file,$newLocation.'/'.$file);
                unlink($location.'/'.$file);
            }
            return TRUE;
        }else{
            return FALSE;
        }
}

语法:

1
2
3
<?php
unzip('test.zip','unziped/test'); //File would be unzipped in unziped/test folder
?>

17. 缩放图片

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
function resize_image($filename, $tmpname, $xmax, $ymax)  
{  
    $ext = explode(".", $filename);  
    $ext = $ext[count($ext)-1];  
  
    if($ext == "jpg" || $ext == "jpeg")  
        $im = imagecreatefromjpeg($tmpname);  
    elseif($ext == "png")  
        $im = imagecreatefrompng($tmpname);  
    elseif($ext == "gif")  
        $im = imagecreatefromgif($tmpname);  
      
    $x = imagesx($im);  
    $y = imagesy($im);  
      
    if($x <= $xmax && $y <= $ymax)  
        return $im;  
  
    if($x >= $y) {  
        $newx = $xmax;  
        $newy = $newx * $y / $x;  
    }  
    else {  
        $newy = $ymax;  
        $newx = $x / $y * $newy;  
    }  
      
    $im2 = imagecreatetruecolor($newx, $newy);  
    imagecopyresized($im2, $im, 0, 0, 0, 0, floor($newx), floor($newy), $x, $y);  
    return $im2;   
}

18. 使用 mail() 发送邮件

之前我们提供了如何使用 Mandrill 发送邮件的 PHP 代码片段,但是如果你不想使用第三方服务,那么可以使用下面的 PHP 代码片段。

1
2
3
4
5
6
7
8
9
10
function send_mail($to,$subject,$body)
{
$headers = "From: KOONK\r\n";
$headers .= "Reply-To: blog@koonk.com\r\n";
$headers .= "Return-Path: blog@koonk.com\r\n";
$headers .= "X-Mailer: PHP5\n";
$headers .= 'MIME-Version: 1.0' . "\n";
$headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
mail($to,$subject,$body,$headers);
}

语法:

1
2
3
4
5
6
<?php
$to = "admin@koonk.com";
$subject = "This is a test mail";
$body = "Hello World!";
send_mail($to,$subject,$body);
?>

19. 把秒转换成天数,小时数和分钟

1
2
3
4
5
6
7
function secsToStr($secs) {
    if($secs>=86400){$days=floor($secs/86400);$secs=$secs%86400;$r=$days.' day';if($days<>1){$r.='s';}if($secs>0){$r.=', ';}}
    if($secs>=3600){$hours=floor($secs/3600);$secs=$secs%3600;$r.=$hours.' hour';if($hours<>1){$r.='s';}if($secs>0){$r.=', ';}}
    if($secs>=60){$minutes=floor($secs/60);$secs=$secs%60;$r.=$minutes.' minute';if($minutes<>1){$r.='s';}if($secs>0){$r.=', ';}}
    $r.=$secs.' second';if($secs<>1){$r.='s';}
    return $r;
}

语法:

1
2
3
4
5
<?php
$seconds = "56789";
$output = secsToStr($seconds);
echo $output;
?>

20. 数据库连接

连接 MySQL 数据库

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
<?php
$DBNAME = 'koonk';
$HOST = 'localhost';
$DBUSER = 'root';
$DBPASS = 'koonk';
$CONNECT = mysql_connect($HOST,$DBUSER,$DBPASS);
if(!$CONNECT)
{
    echo 'MySQL Error: '.mysql_error();
}
$SELECT = mysql_select_db($DBNAME);
if(!$SELECT)
{
    echo 'MySQL Error: '.mysql_error();
}
?>

21. 目录清单

使用下面的 PHP 代码片段可以在一个目录中列出所有文件和文件夹

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
function list_files($dir)
{
    if(is_dir($dir))
    {
        if($handle = opendir($dir))
        {
            while(($file = readdir($handle)) !== false)
            {
                if($file != "." &amp;&amp; $file != ".." &amp;&amp; $file != "Thumbs.db"/*pesky windows, images..*/)
                {
                    echo '<a target="_blank" href="'.$dir.$file.'">'.$file.'</a><br>'."\n";
                }
            }
            closedir($handle);
        }
    }
}

语法:

1
2
3
<?php
    list_files("images/"); //This will list all files of images folder
?>

22. 检测用户语言

使用下面的 PHP 代码片段可以检测用户浏览器所使用的语言

1
2
3
4
5
6
7
8
9
10
11
12
function get_client_language($availableLanguages, $default='en'){
    if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
        $langs=explode(',',$_SERVER['HTTP_ACCEPT_LANGUAGE']);
        foreach ($langs as $value){
            $choice=substr($value,0,2);
            if(in_array($choice, $availableLanguages)){
                return $choice;
            }
        }
    }
    return $default;
}

23. 查看 CSV 文件

1
2
3
4
5
6
7
8
function readCSV($csvFile){
    $file_handle = fopen($csvFile, 'r');
    while (!feof($file_handle) ) {
        $line_of_text[] = fgetcsv($file_handle, 1024);
    }
    fclose($file_handle);
    return $line_of_text;
}

语法:

1
2
3
4
5
<?php
$csvFile = "test.csv";
$csv = readCSV($csvFile);
$a = csv[0][0]; // This will get value of Column 1 & Row 1
?>

24. 从 PHP 数据创建 CSV 文件

1
2
3
4
5
6
7
8
9
10
11
12
function generateCsv($data, $delimiter = ',', $enclosure = '"') {
   $handle = fopen('php://temp', 'r+');
   foreach ($data as $line) {
           fputcsv($handle, $line, $delimiter, $enclosure);
   }
   rewind($handle);
   while (!feof($handle)) {
           $contents .= fread($handle, 8192);
   }
   fclose($handle);
   return $contents;
}

语法:

1
2
3
4
5
<?php
$data[0] = "apple";
$data[1] = "oranges";
generateCsv($data, $delimiter = ',', $enclosure = '"');
?>

25. 解析 XML 数据

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
$xml_string="<?xml version='1.0'?>
<moleculedb>
    <molecule name='Benzine'>
        <symbol>ben</symbol>
        <code>A</code>
    </molecule>
    <molecule name='Water'>
        <symbol>h2o</symbol>
        <code>K</code>
    </molecule>
</moleculedb>";
 
//load the xml string using simplexml function
$xml = simplexml_load_string($xml_string);
 
//loop through the each node of molecule
foreach ($xml->molecule as $record)
{
   //attribute are accessted by
   echo $record['name'], '  ';
   //node are accessted by -> operator
   echo $record->symbol, '  ';
   echo $record->code, '<br />';
}

26. 解析 JSON 数据

1
2
3
4
5
$json_string='{"id":1,"name":"rolf","country":"russia","office":["google","oracle"]} ';
$obj=json_decode($json_string);
//print the parsed data
echo $obj->name; //displays rolf
echo $obj->office[0]; //displays google

27. 获取当前页面 URL

这个 PHP 片段可以帮助你让用户登录后直接跳转到之前浏览的页面

1
2
3
4
5
6
function current_url()
{
$url = "http://" . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
$validURL = str_replace("&", "&amp;", $url);
return validURL;
}

语法:

1
2
3
<?php
echo "Currently you are on: ".current_url();
?>

28. 从任意的 Twitter 账号获取最新的 Tweet

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
function my_twitter($username)
{
     $no_of_tweets = 1;
     $feed = "http://search.twitter.com/search.atom?q=from:" . $username . "&rpp=" . $no_of_tweets;
     $xml = simplexml_load_file($feed);
    foreach($xml->children() as $child) {
        foreach ($child as $value) {
            if($value->getName() == "link") $link = $value['href'];
            if($value->getName() == "content") {
                $content = $value . "";
        echo '<p class="twit">'.$content.' <a class="twt" href="'.$link.'" title="">&nbsp; </a></p>';
            }    
        }
    }    
}

语法:

1
2
3
4
<?php
$handle = "koonktech";
my_twitter($handle);
?>

29. 转发数量

使用这个 PHP 片段可以检测你的页面 URL 有多少转发数量

1
2
3
4
5
6
7
8
9
10
function tweetCount($url) {
    $content = file_get_contents("http://api.tweetmeme.com/url_info?url=".$url);
    $element = new SimpleXmlElement($content);
    $retweets = $element->story->url_count;
    if($retweets){
        return $retweets;
    } else {
        return 0;
    }
}

语法:

1
2
3
4
5
<?php
$url = "http://blog.koonk.com";
$count = tweetCount($url);
return $count;
?>

30. 计算两个日期的差

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
<?php
$date1 = date( 'Y-m-d' );
$date2 = "2015-12-04";
$diff = abs(strtotime($date2) - strtotime($date1));
$years = floor($diff / (365*60*60*24));
$months = floor(($diff - $years * 365*60*60*24) / (30*60*60*24));
$days = floor(($diff - $years * 365*60*60*24 - $months*30*60*60*24)/ (60*60*24));
printf("%d years, %d months, %d days\n", $years, $months, $days);
-------------------------------------------------------- OR
$date1 = new DateTime("2007-03-24");
$date2 = new DateTime("2009-06-26");
$interval = $date1->diff($date2);
echo "difference " . $interval->y . " years, " . $interval->m." months, ".$interval->d." days ";
// shows the total amount of days (not divided into years, months and days like above)
echo "difference " . $interval->days . " days ";
-------------------------------------------------------- OR
    
    
/**
 * Calculate differences between two dates with precise semantics. Based on PHPs DateTime::diff()
 * implementation by Derick Rethans. Ported to PHP by Emil H, 2011-05-02. No rights reserved.
 *
 * See here for original code:
 * http://svn.php.net/viewvc/php/php-src/trunk/ext/date/lib/tm2unixtime.c?revision=302890&view=markup
 * http://svn.php.net/viewvc/php/php-src/trunk/ext/date/lib/interval.c?revision=298973&view=markup
 */
function _date_range_limit($start, $end, $adj, $a, $b, $result)
{
    if ($result[$a] < $start) {
        $result[$b] -= intval(($start - $result[$a] - 1) / $adj) + 1;
        $result[$a] += $adj * intval(($start - $result[$a] - 1) / $adj + 1);
    }
    if ($result[$a] >= $end) {
        $result[$b] += intval($result[$a] / $adj);
        $result[$a] -= $adj * intval($result[$a] / $adj);
    }
    return $result;
}
function _date_range_limit_days($base, $result)
{
    $days_in_month_leap = array(31, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
    $days_in_month = array(31, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
    _date_range_limit(1, 13, 12, "m", "y", &$base);
    $year = $base["y"];
    $month = $base["m"];
    if (!$result["invert"]) {
        while ($result["d"] < 0) {
            $month--;
            if ($month < 1) {
                $month += 12;
                $year--;
            }
            $leapyear = $year % 400 == 0 || ($year % 100 != 0 && $year % 4 == 0);
            $days = $leapyear ? $days_in_month_leap[$month] : $days_in_month[$month];
            $result["d"] += $days;
            $result["m"]--;
        }
    } else {
        while ($result["d"] < 0) {
            $leapyear = $year % 400 == 0 || ($year % 100 != 0 && $year % 4 == 0);
            $days = $leapyear ? $days_in_month_leap[$month] : $days_in_month[$month];
            $result["d"] += $days;
            $result["m"]--;
            $month++;
            if ($month > 12) {
                $month -= 12;
                $year++;
            }
        }
    }
    return $result;
}
function _date_normalize($base, $result)
{
    $result = _date_range_limit(0, 60, 60, "s", "i", $result);
    $result = _date_range_limit(0, 60, 60, "i", "h", $result);
    $result = _date_range_limit(0, 24, 24, "h", "d", $result);
    $result = _date_range_limit(0, 12, 12, "m", "y", $result);
    $result = _date_range_limit_days(&$base, &$result);
    $result = _date_range_limit(0, 12, 12, "m", "y", $result);
    return $result;
}
/**
 * Accepts two unix timestamps.
 */
function _date_diff($one, $two)
{
    $invert = false;
    if ($one > $two) {
        list($one, $two) = array($two, $one);
        $invert = true;
    }
    $key = array("y", "m", "d", "h", "i", "s");
    $a = array_combine($key, array_map("intval", explode(" ", date("Y m d H i s", $one))));
    $b = array_combine($key, array_map("intval", explode(" ", date("Y m d H i s", $two))));
    $result = array();
    $result["y"] = $b["y"] - $a["y"];
    $result["m"] = $b["m"] - $a["m"];
    $result["d"] = $b["d"] - $a["d"];
    $result["h"] = $b["h"] - $a["h"];
    $result["i"] = $b["i"] - $a["i"];
    $result["s"] = $b["s"] - $a["s"];
    $result["invert"] = $invert ? 1 : 0;
    $result["days"] = intval(abs(($one - $two)/86400));
    if ($invert) {
        _date_normalize(&$a, &$result);
    } else {
        _date_normalize(&$b, &$result);
    }
    return $result;
}
$date = "2014-12-04 19:37:22";
echo '<pre>';
print_r( _date_diff( strtotime($date), time() ) );
echo '</pre>';
?>

31. 删除文件夹内容

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
function Delete($path)
{
    if (is_dir($path) === true)
    {
        $files = array_diff(scandir($path), array('.', '..'));
        foreach ($files as $file)
        {
            Delete(realpath($path) . '/' . $file);
        }
        return rmdir($path);
    }
    else if (is_file($path) === true)
    {
        return unlink($path);
    }
    return false;
}

语法:

1
2
3
4
<?php
$path = "images/";
Delete($path); // This will delete images folder along with its contents.
?>

32. 搜索和高亮字符串中的关键字

1
2
3
4
5
6
7
8
9
10
11
function highlighter_text($text, $words)
{
    $split_words = explode( " " , $words );
    foreach($split_words as $word)
    {
        $color = "#4285F4";
        $text = preg_replace("|($word)|Ui" ,
            "<span style=\"color:".$color.";\"><b>$1</b></span>" , $text );
    }
    return $text;
}

语法:

1
2
3
4
5
<?php
$string = "I like chocolates and I like apples";
$words = "apple";
echo highlighter_text($string ,$words);
?>

33. 写入文件

1
2
3
4
5
6
7
8
9
<?
$filename = 'blog.csv';
$fp = fopen($filename, 'w');
$output = " Hello ";
$output .= " World! ";
$output .= "\r\n";
fputs($fp, $output);
fclose($fp);
?>

34. 根据 URL 下载图片

1
2
3
4
5
6
7
8
9
10
11
12
function imagefromURL($image,$rename)
{
$ch = curl_init($image);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_BINARYTRANSFER,1);
$rawdata=curl_exec ($ch);
curl_close ($ch);
$fp = fopen("$rename",'w');
fwrite($fp, $rawdata);
fclose($fp);
}

语法:

1
2
3
4
5
<?php
$url = "http://koonk.com/images/logo.png";
$rename = "koonk.png";
imagefromURL($url,$rename);
?>

35. 检测 URL 是否有效

1
2
3
4
5
6
7
8
function isvalidURL($url)
{
$check = 0;
if (filter_var($url, FILTER_VALIDATE_URL) !== false) {
  $check = 1;
}
return $check;
}

语法:

1
2
3
4
5
<?php
$url = "http://koonk.com";
$check = checkvalidURL($url);
echo $check; //if returns 1 then URL is valid.
?>

36. 生成二维码

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
function qr_code($data, $type = "TXT", $size ='150', $ec='L', $margin='0')  
{
     $types = array("URL" =--> "http://", "TEL" => "TEL:", "TXT"=>"", "EMAIL" => "MAILTO:");
    if(!in_array($type,array("URL", "TEL", "TXT", "EMAIL")))
    {
        $type = "TXT";
    }
    if (!preg_match('/^'.$types[$type].'/', $data))
    {
        $data = str_replace("\\", "", $types[$type]).$data;
    }
    $ch = curl_init();
    $data = urlencode($data);
    curl_setopt($ch, CURLOPT_URL, 'http://chart.apis.google.com/chart');
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_POSTFIELDS, 'chs='.$size.'x'.$size.'&cht=qr&chld='.$ec.'|'.$margin.'&chl='.$data);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_HEADER, false);
    curl_setopt($ch, CURLOPT_TIMEOUT, 30);
    $response = curl_exec($ch);
    curl_close($ch);
    return $response;
}

语法:

1
2
3
4
<?php
header("Content-type: image/png");
echo qr_code("http://koonk.com", "URL");
?>

37. 计算两个地图坐标之间的距离

1
2
3
4
5
6
7
8
9
10
11
12
function getDistanceBetweenPointsNew($latitude1, $longitude1, $latitude2, $longitude2) {
    $theta = $longitude1 - $longitude2;
    $miles = (sin(deg2rad($latitude1)) * sin(deg2rad($latitude2))) + (cos(deg2rad($latitude1)) * cos(deg2rad($latitude2)) * cos(deg2rad($theta)));
    $miles = acos($miles);
    $miles = rad2deg($miles);
    $miles = $miles * 60 * 1.1515;
    $feet = $miles * 5280;
    $yards = $feet / 3;
    $kilometers = $miles * 1.609344;
    $meters = $kilometers * 1000;
    return compact('miles','feet','yards','kilometers','meters');
}

语法:

1
2
3
4
5
6
7
8
<?php
$point1 = array('lat' => 40.770623, 'long' => -73.964367);
$point2 = array('lat' => 40.758224, 'long' => -73.917404);
$distance = getDistanceBetweenPointsNew($point1['lat'], $point1['long'], $point2['lat'], $point2['long']);
foreach ($distance as $unit => $value) {
    echo $unit.': '.number_format($value,4).'<br />';
}
?>

38. 获取一个特定话题标签的所有 Tweets

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
function getTweets($hash_tag) {
    $url = 'http://search.twitter.com/search.atom?q='.urlencode($hash_tag) ;
    echo "<p>Connecting to <strong>$url</strong> ...</p>";
    $ch = curl_init($url);
    curl_setopt ($ch, CURLOPT_RETURNTRANSFER, TRUE);
    $xml = curl_exec ($ch);
    curl_close ($ch);
    //If you want to see the response from Twitter, uncomment this next part out:
    //echo "<p>Response:</p>";
    //echo "<pre>".htmlspecialchars($xml)."</pre>";
    $affected = 0;
    $twelement = new SimpleXMLElement($xml);
    foreach ($twelement->entry as $entry) {
        $text = trim($entry->title);
        $author = trim($entry->author->name);
        $time = strtotime($entry->published);
        $id = $entry->id;
        echo "<p>Tweet from ".$author.": <strong>".$text."</strong>  <em>Posted ".date('n/j/y g:i a',$time)."</em></p>";
    }
    return true ;
}

39. 添加 th,st,nd 或者 rd 作为数字的后缀

Friday the 13th

1
2
3
4
5
6
7
function ordinal($cdnl){
    $test_c = abs($cdnl) % 10;
    $ext = ((abs($cdnl) %100 < 21 && abs($cdnl) %100 > 4) ? 'th'
            : (($test_c < 4) ? ($test_c < 3) ? ($test_c < 2) ? ($test_c < 1)
            ? 'th' : 'st' : 'nd' : 'rd' : 'th'));
    return $cdnl.$ext;
}

语法:

1
2
3
4
<?php
$number = 10;
echo ordinal($number); //output is 10th
?>

40. 限制文件下载的速度

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
<?php
// local file that should be send to the client
$local_file = 'test-file.zip';
// filename that the user gets as default
$download_file = 'your-download-name.zip';
 
// set the download rate limit (=> 20,5 kb/s)
$download_rate = 20.5;
if(file_exists($local_file) && is_file($local_file)) {
    // send headers
    header('Cache-control: private');
    header('Content-Type: application/octet-stream');
    header('Content-Length: '.filesize($local_file));
    header('Content-Disposition: filename='.$download_file);
 
    // flush content
    flush();    
    // open file stream
    $file = fopen($local_file, "r");    
    while(!feof($file)) {
 
        // send the current file part to the browser
        print fread($file, round($download_rate * 1024));    
 
        // flush the content to the browser
        flush();
 
        // sleep one second
        sleep(1);    
    }    
 
    // close file stream
    fclose($file);}
else {
    die('Error: The file '.$local_file.' does not exist!');
}
?>

41. 把文本转换成图片

1
2
3
4
5
6
7
8
9
10
11
12
<?php
header("Content-type: image/png");
$string = $_GET['text'];
$im = imagecreatefrompng("images/button.png");
$color = imagecolorallocate($im, 255, 255, 255);
$px = (imagesx($im) - 7.5 * strlen($string)) / 2;
$py = 9;
$fontSize = 1;
imagestring($im, fontSize, $px, $py, $string, $color);
imagepng($im);
imagedestroy($im);
?>

42. 获取远程文件的大小

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
function remote_filesize($url, $user = "", $pw = "")
{
    ob_start();
    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_HEADER, 1);
    curl_setopt($ch, CURLOPT_NOBODY, 1);
    if(!empty($user) && !empty($pw))
    {
        $headers = array('Authorization: Basic ' base64_encode("$user:$pw"));
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    }
    $ok = curl_exec($ch);
    curl_close($ch);
    $head = ob_get_contents();
    ob_end_clean();
    $regex = '/Content-Length:\s([0-9].+?)\s/';
    $count = preg_match($regex, $head, $matches);
    return isset($matches[1]) ? $matches[1] : "unknown";
}

语法:

1
2
3
4
5
<?php
$file = "http://koonk.com/images/logo.png";
$size = remote_filesize($url);
echo $size;
?>

43. 使用 imagebrick 进行 pdf 到图像的转换

1
2
3
4
5
6
7
8
9
10
<?php
$pdf_file   = './pdf/demo.pdf';
$save_to    = './jpg/demo.jpg';     //make sure that apache has permissions to write in this folder! (common problem)
//execute ImageMagick command 'convert' and convert PDF to JPG with applied settings
exec('convert "'.$pdf_file.'" -colorspace RGB -resize 800 "'.$save_to.'"', $output, $return_var);
if($return_var == 0) {              //if exec successfuly converted pdf to jpg
    print "Conversion OK";
}
else print "Conversion failed.<br />".$output;
?>

44. 使用 tinyurl 生成短网址

1
2
3
4
5
6
7
8
9
10
11
function get_tiny_url($url)  
{  
    $ch = curl_init();  
    $timeout = 5;  
    curl_setopt($ch,CURLOPT_URL,'http://tinyurl.com/api-create.php?url='.$url);  
    curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);  
    curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,$timeout);  
    $data = curl_exec($ch);  
    curl_close($ch);  
    return $data;  
}

语法:

1
2
3
4
5
<?php
$url = "http://blog.koonk.com/2015/07/Hello-World";
$tinyurl = get_tiny_url($url);
echo $tinyurl;
?>

45. youtube 下载链接生成器

使用下面的 PHP 片段可以让你的用户下载 Youtube 视频

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
function str_between($string, $start, $end)
{
$string = " ".$string; $ini = strpos($string,$start); if ($ini == 0) return ""; $ini += strlen($start); $len = strpos($string,$end,$ini) - $ini; return substr($string,$ini,$len); }
function get_youtube_download_link(){
    $youtube_link = $_GET['youtube'];
    $youtube_page = file_get_contents($youtube_link);
    $v_id = str_between($youtube_page, "&video_id=", "&");
    $t_id = str_between($youtube_page, "&t=", "&");
    $flv_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id";
    $hq_flv_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id&fmt=6";
    $mp4_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id&fmt=18";
    $threegp_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id&fmt=17";
    echo "\t\tDownload (right-click &gt; save as)&#58;\n\t\t";
    echo "<a href=\"$flv_link\">FLV</a>\n\t\t";
    echo "<a href=\"$hq_flv_link\">HQ FLV (if available)</a>\n\t\t";
    echo "<a href=\"$mp4_link\">MP4</a>\n\t\t";
    echo "<a href=\"$threegp_link\">3GP</a><br><br>\n";
}

46. Facebook 样式的时间戳

Facebook (x mins age, y hours ago etc)

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
function nicetime($date)
{
    if(empty($date)) {
        return "No date provided";
    }
    
    $periods         = array("second", "minute", "hour", "day", "week", "month", "year", "decade");
    $lengths         = array("60","60","24","7","4.35","12","10");
    
    $now             = time();
    $unix_date         = strtotime($date);
    
       // check validity of date
    if(empty($unix_date)) {    
        return "Bad date";
    }
    // is it future date or past date
    if($now > $unix_date) {    
        $difference     = $now - $unix_date;
        $tense         = "ago";
        
    } else {
        $difference     = $unix_date - $now;
        $tense         = "from now";
    }
    
    for($j = 0; $difference >= $lengths[$j] && $j < count($lengths)-1; $j++) {
        $difference /= $lengths[$j];
    }
    
    $difference = round($difference);
    
    if($difference != 1) {
        $periods[$j].= "s";
    }
    
    return "$difference $periods[$j] {$tense}";
}

语法:

1
2
3
4
<?php
$date = "2015-07-05 03:45";
$result = nicetime($date); // 2 days ago
?>

46 个非常有用的 PHP 代码片段(一)

个非常有用的 PHP 代码片段

http://www.imooc.com/article/1373
http://www.oschina.net/question/2012764_246023

在编写代码的时候有个神奇的工具总是好的!下面这里收集了 40+ PHP 代码片段,可以帮助你开发 PHP 项目。

这些 PHP 片段对于 PHP 初学者也非常有帮助,非常容易学习,让我们开始学习吧~

1. 发送 SMS

在开发 Web 或者移动应用的时候,经常会遇到需要发送 SMS 给用户,或者因为登录原因,或者是为了发送信息。下面的 PHP 代码就实现了发送 SMS 的功能。

为了使用任何的语言发送 SMS,需要一个 SMS gateway。大部分的 SMS 会提供一个 API,这里是使用MSG91 作为 SMS gateway。

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
function send_sms($mobile,$msg)
{
$authKey "XXXXXXXXXXX";
date_default_timezone_set("Asia/Kolkata");
$date strftime("%Y-%m-%d %H:%M:%S");
//Multiple mobiles numbers separated by comma
$mobileNumber $mobile;
 
//Sender ID,While using route4 sender id should be 6 characters long.
$senderId "IKOONK";
 
//Your message to send, Add URL encoding here.
$message = urlencode($msg);
 
//Define route 
$route "template";
//Prepare you post parameters
$postData array(
    'authkey' => $authKey,
    'mobiles' => $mobileNumber,
    'message' => $message,
    'sender' => $senderId,
    'route' => $route
);
 
//API URL
$url="https://control.msg91.com/sendhttp.php";
 
// init the resource
$ch = curl_init();
curl_setopt_array($charray(
    CURLOPT_URL => $url,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_POST => true,
    CURLOPT_POSTFIELDS => $postData
    //,CURLOPT_FOLLOWLOCATION => true
));
 
 
//Ignore SSL certificate verification
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
 
 
//get response
$output = curl_exec($ch);
//Print error if any
if(curl_errno($ch))
{
    echo 'error:' . curl_error($ch);
}
 
curl_close($ch);
}

其中“$authKey = “XXXXXXXXXXX”;”需要你输入你的密码,“$senderId = “IKOONK”;”需要你输入你的 SenderID。当输入移动号码的时候需要指定国家代码 (比如,美国是 1,印度是 91 )。

语法:

1
2
3
4
5
<?php
$message "Hello World";
$mobile "918112998787";
send_sms($mobile,$message);
?>

2. 使用 mandrill 发送邮件

Mandrill 是一款强大的 SMTP 提供器。开发者倾向于使用一个第三方 SMTP provider 来获取更好的收件交付。

下面的函数中,你需要把 “Mandrill.php” 放在同一个文件夹,作为 PHP 文件,这样就可以使用TA来发送邮件。

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
function send_email($to_email,$subject,$message1)
{
require_once 'Mandrill.php';
$apikey 'XXXXXXXXXX'//specify your api key here
$mandrill new Mandrill($apikey);
 
$message new stdClass();
$message->html = $message1;
$message->text = $message1;
$message->subject = $subject;
$message->from_email = "blog@koonk.com";//Sender Email
$message->from_name  = "KOONK";//Sender Name
$message->to = array(array("email" => $to_email));
$message->track_opens = true;
 
$response $mandrill->messages->send($message);
}

“$apikey = ‘XXXXXXXXXX’; //specify your api key here”这里需要你指定你的 API 密钥(从 Mandrill 账户中获得)。

语法:

1
2
3
4
5
6
<?php
$to "abc@example.com";
$subject "This is a test email";
$message "Hello World!";
send_email($to,$subject,$message);
?>

为了达到最好的效果,最好按照 Mandrill 的教程去配置 DNS。

3. PHP 函数:阻止 SQL 注入

SQL 注入或者 SQLi 常见的攻击网站的手段,使用下面的代码可以帮助你防止这些工具。

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
function clean($input)
{
    if (is_array($input))
    {
        foreach ($input as $key => $val)
         {
            $output[$key] = clean($val);
            // $output[$key] = $this->clean($val);
        }
    }
    else
    {
        $output = (string) $input;
        // if magic quotes is on then use strip slashes
        if (get_magic_quotes_gpc()) 
        {
            $output stripslashes($output);
        }
        // $output = strip_tags($output);
        $output = htmlentities($output, ENT_QUOTES, 'UTF-8');
    }
// return the clean text
    return $output;
}

语法:

1
2
3
4
5
<?php
$text "<script>alert(1)</script>";
$text = clean($text);
echo $text;
?>

4. 检测用户位置

使用下面的函数,可以检测用户是在哪个城市访问你的网站

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
function detect_city($ip) {
        
        $default 'UNKNOWN';
 
        $curlopt_useragent 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6 (.NET CLR 3.5.30729)';
        
        $url 'http://ipinfodb.com/ip_locator.php?ip=' . urlencode($ip);
        $ch = curl_init();
        
        $curl_opt array(
            CURLOPT_FOLLOWLOCATION  => 1,
            CURLOPT_HEADER      => 0,
            CURLOPT_RETURNTRANSFER  => 1,
            CURLOPT_USERAGENT   => $curlopt_useragent,
            CURLOPT_URL       => $url,
            CURLOPT_TIMEOUT         => 1,
            CURLOPT_REFERER         => 'http://' $_SERVER['HTTP_HOST'],
        );
        
        curl_setopt_array($ch$curl_opt);
        
        $content = curl_exec($ch);
        
        if (!is_null($curl_info)) {
            $curl_info = curl_getinfo($ch);
        }
        
        curl_close($ch);
        
        if ( preg_match('{<li>City : ([^<]*)</li>}i'$content$regs) )  {
            $city $regs[1];
        }
        if ( preg_match('{<li>State/Province : ([^<]*)</li>}i'$content$regs) )  {
            $state $regs[1];
        }
 
        if$city!='' && $state!='' ){
          $location $city ', ' $state;
          return $location;
        }else{
          return $default
        }
        
    }

语法:

1
2
3
4
5
<?php
$ip $_SERVER['REMOTE_ADDR'];
$city = detect_city($ip);
echo $city;
?>

5. 获取 Web 页面的源代码

使用下面的函数,可以获取任意 Web 页面的 HTML 代码

1
2
3
4
5
6
7
8
9
function display_sourcecode($url)
{
$lines = file($url);
$output "";
foreach ($lines as $line_num => $line) { 
    // loop thru each line and prepend line numbers
    $output.= "Line #<b>{$line_num}</b> : " . htmlspecialchars($line) . "<br>\n";
}
}

语法:

1
2
3
4
5
<?php
$url "http://blog.koonk.com";
$source = display_sourcecode($url);
echo $source;
?>

6. 计算喜欢你的 Facebook 页面的用户

1
2
3
4
5
6
function fb_fan_count($facebook_name)
{
    $data = json_decode(file_get_contents("https://graph.facebook.com/".$facebook_name));
    $likes $data->likes;
    return $likes;
}

语法:

1
2
3
4
5
<?php
$page "koonktechnologies";
$count = fb_fan_count($page);
echo $count;
?>

7. 确定任意图片的主导颜色

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
function dominant_color($image)
{
$i = imagecreatefromjpeg($image);
for ($x=0;$x<imagesx($i);$x++) {
    for ($y=0;$y<imagesy($i);$y++) {
        $rgb = imagecolorat($i,$x,$y);
        $r   = ($rgb >> 16) & 0xFF;
        $g   = ($rgb >>  & 0xFF;
        $b   $rgb & 0xFF;
        $rTotal += $r;
        $gTotal += $g;
        $bTotal += $b;
        $total++;
    }
}
$rAverage round($rTotal/$total);
$gAverage round($gTotal/$total);
$bAverage round($bTotal/$total);
}

8. whois 查询

使用下面的函数可以获取任何域名用户的完整细节

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
function whois_query($domain) {
 
    // fix the domain name:
    $domain strtolower(trim($domain));
    $domain = preg_replace('/^http:\/\//i'''$domain);
    $domain = preg_replace('/^www\./i'''$domain);
    $domain explode('/'$domain);
    $domain = trim($domain[0]);
 
    // split the TLD from domain name
    $_domain explode('.'$domain);
    $lst count($_domain)-1;
    $ext $_domain[$lst];
 
    // You find resources and lists 
    // like these on wikipedia: 
    //
    // http://de.wikipedia.org/wiki/Whois
    //
    $servers array(
        "biz" => "whois.neulevel.biz",
        "com" => "whois.internic.net",
        "us" => "whois.nic.us",
        "coop" => "whois.nic.coop",
        "info" => "whois.nic.info",
        "name" => "whois.nic.name",
        "net" => "whois.internic.net",
        "gov" => "whois.nic.gov",
        "edu" => "whois.internic.net",
        "mil" => "rs.internic.net",
        "int" => "whois.iana.org",
        "ac" => "whois.nic.ac",
        "ae" => "whois.uaenic.ae",
        "at" => "whois.ripe.net",
        "au" => "whois.aunic.net",
        "be" => "whois.dns.be",
        "bg" => "whois.ripe.net",
        "br" => "whois.registro.br",
        "bz" => "whois.belizenic.bz",
        "ca" => "whois.cira.ca",
        "cc" => "whois.nic.cc",
        "ch" => "whois.nic.ch",
        "cl" => "whois.nic.cl",
        "cn" => "whois.cnnic.net.cn",
        "cz" => "whois.nic.cz",
        "de" => "whois.nic.de",
        "fr" => "whois.nic.fr",
        "hu" => "whois.nic.hu",
        "ie" => "whois.domainregistry.ie",
        "il" => "whois.isoc.org.il",
        "in" => "whois.ncst.ernet.in",
        "ir" => "whois.nic.ir",
        "mc" => "whois.ripe.net",
        "to" => "whois.tonic.to",
        "tv" => "whois.tv",
        "ru" => "whois.ripn.net",
        "org" => "whois.pir.org",
        "aero" => "whois.information.aero",
        "nl" => "whois.domain-registry.nl"
    );
 
    if (!isset($servers[$ext])){
        die('Error: No matching nic server found!');
    }
 
    $nic_server $servers[$ext];
 
    $output '';
 
    // connect to whois server:
    if ($conn fsockopen ($nic_server, 43)) {
        fputs($conn$domain."\r\n");
        while(!feof($conn)) {
            $output .= fgets($conn,128);
        }
        fclose($conn);
    }
    else die('Error: Could not connect to ' $nic_server '!'); }
 
    return $output;
}

语法:

1
2
3
4
5
<?php
$domain "http://www.blog.koonk.com";
$result = whois_query($domain);
print_r($result);
?>

9. 验证邮箱地址

有时候,当在网站填写表单,用户可能会输入错误的邮箱地址,这个函数可以验证邮箱地址是否有效。

1
2
3
4
5
6
7
8
9
function is_validemail($email)
{
$check = 0;
if(filter_var($email,FILTER_VALIDATE_EMAIL))
{
$check = 1;
}
return $check;
}

语法:

1
2
3
4
5
6
<?php
$email "blog@koonk.com";
$check = is_validemail($email);
echo $check;
// If the output is 1, then email is valid.
?>

10. 获取用户的真实  IP

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
function getRealIpAddr()  
{  
    if (!emptyempty($_SERVER['HTTP_CLIENT_IP']))  
    {  
        $ip=$_SERVER['HTTP_CLIENT_IP'];  
    }  
    elseif (!emptyempty($_SERVER['HTTP_X_FORWARDED_FOR']))  
    //to check ip is pass from proxy  
    {  
        $ip=$_SERVER['HTTP_X_FORWARDED_FOR'];  
    }  
    else
    {  
        $ip=$_SERVER['REMOTE_ADDR'];  
    }  
    return $ip;  
}

语法:

1
2
3
4
<?php
$ip = getRealIpAddr();
echo $ip;
?>

11. 转换 URL:从字符串变成超链接

如果你正在开发论坛,博客或者是一个常规的表单提交,很多时候都要用户访问一个网站。使用这个函数,URL 字符串就可以自动的转换为超链接。

1
2
3
4
5
6
7
8
9
10
11
function makeClickableLinks($text
{  
 $text eregi_replace('(((f|ht){1}tp://)[-a-zA-Z0-9@:%_+.~#?&//=]+)',  
 '<a href="\1">\1</a>'$text);  
 $text eregi_replace('([[:space:]()[{}])(www.[-a-zA-Z0-9@:%_+.~#?&//=]+)',  
 '\1<a href="http://\2">\2</a>'$text);  
 $text eregi_replace('([_.0-9a-z-]+@([0-9a-z][0-9a-z-]+.)+[a-z]{2,3})',  
 '<a href="mailto:\1">\1</a>'$text);  
  
return $text;  
}

语法:

1
2
3
4
5
<?php
$text "This is my first post on http://blog.koonk.com";
$text = makeClickableLinks($text);
echo $text;
?>

12. 阻止多个 IP 访问你的网站

这个代码片段可以方便你禁止某些特定的 IP 地址访问你的网站

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
if ( !file_exists('blocked_ips.txt') ) {
 $deny_ips array(
  '127.0.0.1',
  '192.168.1.1',
  '83.76.27.9',
  '192.168.1.163'
 );
else {
 $deny_ips = file('blocked_ips.txt');
}
// read user ip adress:
$ip = isset($_SERVER['REMOTE_ADDR']) ? trim($_SERVER['REMOTE_ADDR']) : '';
 
// search current IP in $deny_ips array
if ( (array_search($ip$deny_ips))!== FALSE ) {
 // address is blocked:
 echo 'Your IP adress ('.$ip.') was blocked!';
 exit;
}

13. 强制性文件下载

如果你需要下载特定的文件而不用另开新窗口,下面的代码片段可以帮助你。

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
function force_download($file
    $dir      "../log/exports/"
    if ((isset($file))&&(file_exists($dir.$file))) { 
       header("Content-type: application/force-download"); 
       header('Content-Disposition: inline; filename="' $dir.$file '"'); 
       header("Content-Transfer-Encoding: Binary"); 
       header("Content-length: ".filesize($dir.$file)); 
       header('Content-Type: application/octet-stream'); 
       header('Content-Disposition: attachment; filename="' $file '"'); 
       readfile("$dir$file"); 
    else 
       echo "No file selected"
    
}

语法:

1
2
3
<php
force_download("image.jpg");
?>

14. 创建 JSON 数据

使用下面的 PHP 片段可以创建 JSON 数据,可以方便你创建移动应用的 Web 服务

1
2
$json_data array ('id'=>1,'name'=>"Mohit");
echo json_encode($json_data);

15. 压缩 zip 文件

使用下面的 PHP 片段可以即时压缩 zip 文件

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
function create_zip($files array(),$destination '',$overwrite = false) {  
    //if the zip file already exists and overwrite is false, return false  
    if(file_exists($destination) && !$overwrite) { return false; }  
    //vars  
    $valid_files array();  
    //if files were passed in...  
    if(is_array($files)) {  
        //cycle through each file  
        foreach($files as $file) {  
            //make sure the file exists  
            if(file_exists($file)) {  
                $valid_files[] = $file;  
            }  
        }  
    }  
    //if we have good files...  
    if(count($valid_files)) {  
        //create the archive  
        $zip new ZipArchive();  
        if($zip->open($destination,$overwrite ? ZIPARCHIVE::OVERWRITE : ZIPARCHIVE::CREATE) !== true) {  
            return false;  
        }  
        //add the files  
        foreach($valid_files as $file) {  
            $zip->addFile($file,$file);  
        }  
        //debug  
        //echo 'The zip archive contains ',$zip->numFiles,' files with a status of ',$zip->status;  
          
        //close the zip -- done!  
        $zip->close();  
          
        //check to make sure the file exists  
        return file_exists($destination);  
    }  
    else
    {  
        return false;  
    }  
}

语法:

1
2
3
4
<?php
$files=array('file1.jpg', 'file2.jpg', 'file3.gif');  
create_zip($files, 'myzipfile.zip', true);
?>

16. 解压文件

1
2
3
4
5
6
7
8
9
10
11
12
13
14
function unzip($location,$newLocation)
{
        if(exec("unzip $location",$arr)){
            mkdir($newLocation);
            for($i = 1;$i< count($arr);$i++){
                $file = trim(preg_replace("~inflating: ~","",$arr[$i]));
                copy($location.'/'.$file,$newLocation.'/'.$file);
                unlink($location.'/'.$file);
            }
            return TRUE;
        }else{
            return FALSE;
        }
}

语法:

1
2
3
<?php
unzip('test.zip','unziped/test'); //File would be unzipped in unziped/test folder
?>

17. 缩放图片

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
function resize_image($filename, $tmpname, $xmax, $ymax)  
{  
    $ext = explode(".", $filename);  
    $ext = $ext[count($ext)-1];  
  
    if($ext == "jpg" || $ext == "jpeg")  
        $im = imagecreatefromjpeg($tmpname);  
    elseif($ext == "png")  
        $im = imagecreatefrompng($tmpname);  
    elseif($ext == "gif")  
        $im = imagecreatefromgif($tmpname);  
      
    $x = imagesx($im);  
    $y = imagesy($im);  
      
    if($x <= $xmax && $y <= $ymax)  
        return $im;  
  
    if($x >= $y) {  
        $newx = $xmax;  
        $newy = $newx * $y / $x;  
    }  
    else {  
        $newy = $ymax;  
        $newx = $x / $y * $newy;  
    }  
      
    $im2 = imagecreatetruecolor($newx, $newy);  
    imagecopyresized($im2, $im, 0, 0, 0, 0, floor($newx), floor($newy), $x, $y);  
    return $im2;   
}

18. 使用 mail() 发送邮件

之前我们提供了如何使用 Mandrill 发送邮件的 PHP 代码片段,但是如果你不想使用第三方服务,那么可以使用下面的 PHP 代码片段。

1
2
3
4
5
6
7
8
9
10
function send_mail($to,$subject,$body)
{
$headers = "From: KOONK\r\n";
$headers .= "Reply-To: blog@koonk.com\r\n";
$headers .= "Return-Path: blog@koonk.com\r\n";
$headers .= "X-Mailer: PHP5\n";
$headers .= 'MIME-Version: 1.0' . "\n";
$headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
mail($to,$subject,$body,$headers);
}

语法:

1
2
3
4
5
6
<?php
$to = "admin@koonk.com";
$subject = "This is a test mail";
$body = "Hello World!";
send_mail($to,$subject,$body);
?>

19. 把秒转换成天数,小时数和分钟

1
2
3
4
5
6
7
function secsToStr($secs) {
    if($secs>=86400){$days=floor($secs/86400);$secs=$secs%86400;$r=$days.' day';if($days<>1){$r.='s';}if($secs>0){$r.=', ';}}
    if($secs>=3600){$hours=floor($secs/3600);$secs=$secs%3600;$r.=$hours.' hour';if($hours<>1){$r.='s';}if($secs>0){$r.=', ';}}
    if($secs>=60){$minutes=floor($secs/60);$secs=$secs%60;$r.=$minutes.' minute';if($minutes<>1){$r.='s';}if($secs>0){$r.=', ';}}
    $r.=$secs.' second';if($secs<>1){$r.='s';}
    return $r;
}

语法:

1
2
3
4
5
<?php
$seconds = "56789";
$output = secsToStr($seconds);
echo $output;
?>

20. 数据库连接

连接 MySQL 数据库

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
<?php
$DBNAME = 'koonk';
$HOST = 'localhost';
$DBUSER = 'root';
$DBPASS = 'koonk';
$CONNECT = mysql_connect($HOST,$DBUSER,$DBPASS);
if(!$CONNECT)
{
    echo 'MySQL Error: '.mysql_error();
}
$SELECT = mysql_select_db($DBNAME);
if(!$SELECT)
{
    echo 'MySQL Error: '.mysql_error();
}
?>

21. 目录清单

使用下面的 PHP 代码片段可以在一个目录中列出所有文件和文件夹

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
function list_files($dir)
{
    if(is_dir($dir))
    {
        if($handle = opendir($dir))
        {
            while(($file = readdir($handle)) !== false)
            {
                if($file != "." &amp;&amp; $file != ".." &amp;&amp; $file != "Thumbs.db"/*pesky windows, images..*/)
                {
                    echo '<a target="_blank" href="'.$dir.$file.'">'.$file.'</a><br>'."\n";
                }
            }
            closedir($handle);
        }
    }
}

语法:

1
2
3
<?php
    list_files("images/"); //This will list all files of images folder
?>

22. 检测用户语言

使用下面的 PHP 代码片段可以检测用户浏览器所使用的语言

1
2
3
4
5
6
7
8
9
10
11
12
function get_client_language($availableLanguages, $default='en'){
    if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
        $langs=explode(',',$_SERVER['HTTP_ACCEPT_LANGUAGE']);
        foreach ($langs as $value){
            $choice=substr($value,0,2);
            if(in_array($choice, $availableLanguages)){
                return $choice;
            }
        }
    }
    return $default;
}

23. 查看 CSV 文件

1
2
3
4
5
6
7
8
function readCSV($csvFile){
    $file_handle = fopen($csvFile, 'r');
    while (!feof($file_handle) ) {
        $line_of_text[] = fgetcsv($file_handle, 1024);
    }
    fclose($file_handle);
    return $line_of_text;
}

语法:

1
2
3
4
5
<?php
$csvFile = "test.csv";
$csv = readCSV($csvFile);
$a = csv[0][0]; // This will get value of Column 1 & Row 1
?>

24. 从 PHP 数据创建 CSV 文件

1
2
3
4
5
6
7
8
9
10
11
12
function generateCsv($data, $delimiter = ',', $enclosure = '"') {
   $handle = fopen('php://temp', 'r+');
   foreach ($data as $line) {
           fputcsv($handle, $line, $delimiter, $enclosure);
   }
   rewind($handle);
   while (!feof($handle)) {
           $contents .= fread($handle, 8192);
   }
   fclose($handle);
   return $contents;
}

语法:

1
2
3
4
5
<?php
$data[0] = "apple";
$data[1] = "oranges";
generateCsv($data, $delimiter = ',', $enclosure = '"');
?>

25. 解析 XML 数据

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
$xml_string="<?xml version='1.0'?>
<moleculedb>
    <molecule name='Benzine'>
        <symbol>ben</symbol>
        <code>A</code>
    </molecule>
    <molecule name='Water'>
        <symbol>h2o</symbol>
        <code>K</code>
    </molecule>
</moleculedb>";
 
//load the xml string using simplexml function
$xml = simplexml_load_string($xml_string);
 
//loop through the each node of molecule
foreach ($xml->molecule as $record)
{
   //attribute are accessted by
   echo $record['name'], '  ';
   //node are accessted by -> operator
   echo $record->symbol, '  ';
   echo $record->code, '<br />';
}

26. 解析 JSON 数据

1
2
3
4
5
$json_string='{"id":1,"name":"rolf","country":"russia","office":["google","oracle"]} ';
$obj=json_decode($json_string);
//print the parsed data
echo $obj->name; //displays rolf
echo $obj->office[0]; //displays google

27. 获取当前页面 URL

这个 PHP 片段可以帮助你让用户登录后直接跳转到之前浏览的页面

1
2
3
4
5
6
function current_url()
{
$url = "http://" . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
$validURL = str_replace("&", "&amp;", $url);
return validURL;
}

语法:

1
2
3
<?php
echo "Currently you are on: ".current_url();
?>

28. 从任意的 Twitter 账号获取最新的 Tweet

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
function my_twitter($username)
{
     $no_of_tweets = 1;
     $feed = "http://search.twitter.com/search.atom?q=from:" . $username . "&rpp=" . $no_of_tweets;
     $xml = simplexml_load_file($feed);
    foreach($xml->children() as $child) {
        foreach ($child as $value) {
            if($value->getName() == "link") $link = $value['href'];
            if($value->getName() == "content") {
                $content = $value . "";
        echo '<p class="twit">'.$content.' <a class="twt" href="'.$link.'" title="">&nbsp; </a></p>';
            }    
        }
    }    
}

语法:

1
2
3
4
<?php
$handle = "koonktech";
my_twitter($handle);
?>

29. 转发数量

使用这个 PHP 片段可以检测你的页面 URL 有多少转发数量

1
2
3
4
5
6
7
8
9
10
function tweetCount($url) {
    $content = file_get_contents("http://api.tweetmeme.com/url_info?url=".$url);
    $element = new SimpleXmlElement($content);
    $retweets = $element->story->url_count;
    if($retweets){
        return $retweets;
    } else {
        return 0;
    }
}

语法:

1
2
3
4
5
<?php
$url = "http://blog.koonk.com";
$count = tweetCount($url);
return $count;
?>

30. 计算两个日期的差

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
<?php
$date1 = date( 'Y-m-d' );
$date2 = "2015-12-04";
$diff = abs(strtotime($date2) - strtotime($date1));
$years = floor($diff / (365*60*60*24));
$months = floor(($diff - $years * 365*60*60*24) / (30*60*60*24));
$days = floor(($diff - $years * 365*60*60*24 - $months*30*60*60*24)/ (60*60*24));
printf("%d years, %d months, %d days\n", $years, $months, $days);
-------------------------------------------------------- OR
$date1 = new DateTime("2007-03-24");
$date2 = new DateTime("2009-06-26");
$interval = $date1->diff($date2);
echo "difference " . $interval->y . " years, " . $interval->m." months, ".$interval->d." days ";
// shows the total amount of days (not divided into years, months and days like above)
echo "difference " . $interval->days . " days ";
-------------------------------------------------------- OR
    
    
/**
 * Calculate differences between two dates with precise semantics. Based on PHPs DateTime::diff()
 * implementation by Derick Rethans. Ported to PHP by Emil H, 2011-05-02. No rights reserved.
 *
 * See here for original code:
 * http://svn.php.net/viewvc/php/php-src/trunk/ext/date/lib/tm2unixtime.c?revision=302890&view=markup
 * http://svn.php.net/viewvc/php/php-src/trunk/ext/date/lib/interval.c?revision=298973&view=markup
 */
function _date_range_limit($start, $end, $adj, $a, $b, $result)
{
    if ($result[$a] < $start) {
        $result[$b] -= intval(($start - $result[$a] - 1) / $adj) + 1;
        $result[$a] += $adj * intval(($start - $result[$a] - 1) / $adj + 1);
    }
    if ($result[$a] >= $end) {
        $result[$b] += intval($result[$a] / $adj);
        $result[$a] -= $adj * intval($result[$a] / $adj);
    }
    return $result;
}
function _date_range_limit_days($base, $result)
{
    $days_in_month_leap = array(31, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
    $days_in_month = array(31, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
    _date_range_limit(1, 13, 12, "m", "y", &$base);
    $year = $base["y"];
    $month = $base["m"];
    if (!$result["invert"]) {
        while ($result["d"] < 0) {
            $month--;
            if ($month < 1) {
                $month += 12;
                $year--;
            }
            $leapyear = $year % 400 == 0 || ($year % 100 != 0 && $year % 4 == 0);
            $days = $leapyear ? $days_in_month_leap[$month] : $days_in_month[$month];
            $result["d"] += $days;
            $result["m"]--;
        }
    } else {
        while ($result["d"] < 0) {
            $leapyear = $year % 400 == 0 || ($year % 100 != 0 && $year % 4 == 0);
            $days = $leapyear ? $days_in_month_leap[$month] : $days_in_month[$month];
            $result["d"] += $days;
            $result["m"]--;
            $month++;
            if ($month > 12) {
                $month -= 12;
                $year++;
            }
        }
    }
    return $result;
}
function _date_normalize($base, $result)
{
    $result = _date_range_limit(0, 60, 60, "s", "i", $result);
    $result = _date_range_limit(0, 60, 60, "i", "h", $result);
    $result = _date_range_limit(0, 24, 24, "h", "d", $result);
    $result = _date_range_limit(0, 12, 12, "m", "y", $result);
    $result = _date_range_limit_days(&$base, &$result);
    $result = _date_range_limit(0, 12, 12, "m", "y", $result);
    return $result;
}
/**
 * Accepts two unix timestamps.
 */
function _date_diff($one, $two)
{
    $invert = false;
    if ($one > $two) {
        list($one, $two) = array($two, $one);
        $invert = true;
    }
    $key = array("y", "m", "d", "h", "i", "s");
    $a = array_combine($key, array_map("intval", explode(" ", date("Y m d H i s", $one))));
    $b = array_combine($key, array_map("intval", explode(" ", date("Y m d H i s", $two))));
    $result = array();
    $result["y"] = $b["y"] - $a["y"];
    $result["m"] = $b["m"] - $a["m"];
    $result["d"] = $b["d"] - $a["d"];
    $result["h"] = $b["h"] - $a["h"];
    $result["i"] = $b["i"] - $a["i"];
    $result["s"] = $b["s"] - $a["s"];
    $result["invert"] = $invert ? 1 : 0;
    $result["days"] = intval(abs(($one - $two)/86400));
    if ($invert) {
        _date_normalize(&$a, &$result);
    } else {
        _date_normalize(&$b, &$result);
    }
    return $result;
}
$date = "2014-12-04 19:37:22";
echo '<pre>';
print_r( _date_diff( strtotime($date), time() ) );
echo '</pre>';
?>

31. 删除文件夹内容

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
function Delete($path)
{
    if (is_dir($path) === true)
    {
        $files = array_diff(scandir($path), array('.', '..'));
        foreach ($files as $file)
        {
            Delete(realpath($path) . '/' . $file);
        }
        return rmdir($path);
    }
    else if (is_file($path) === true)
    {
        return unlink($path);
    }
    return false;
}

语法:

1
2
3
4
<?php
$path = "images/";
Delete($path); // This will delete images folder along with its contents.
?>

32. 搜索和高亮字符串中的关键字

1
2
3
4
5
6
7
8
9
10
11
function highlighter_text($text, $words)
{
    $split_words = explode( " " , $words );
    foreach($split_words as $word)
    {
        $color = "#4285F4";
        $text = preg_replace("|($word)|Ui" ,
            "<span style=\"color:".$color.";\"><b>$1</b></span>" , $text );
    }
    return $text;
}

语法:

1
2
3
4
5
<?php
$string = "I like chocolates and I like apples";
$words = "apple";
echo highlighter_text($string ,$words);
?>

33. 写入文件

1
2
3
4
5
6
7
8
9
<?
$filename = 'blog.csv';
$fp = fopen($filename, 'w');
$output = " Hello ";
$output .= " World! ";
$output .= "\r\n";
fputs($fp, $output);
fclose($fp);
?>

34. 根据 URL 下载图片

1
2
3
4
5
6
7
8
9
10
11
12
function imagefromURL($image,$rename)
{
$ch = curl_init($image);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_BINARYTRANSFER,1);
$rawdata=curl_exec ($ch);
curl_close ($ch);
$fp = fopen("$rename",'w');
fwrite($fp, $rawdata);
fclose($fp);
}

语法:

1
2
3
4
5
<?php
$url = "http://koonk.com/images/logo.png";
$rename = "koonk.png";
imagefromURL($url,$rename);
?>

35. 检测 URL 是否有效

1
2
3
4
5
6
7
8
function isvalidURL($url)
{
$check = 0;
if (filter_var($url, FILTER_VALIDATE_URL) !== false) {
  $check = 1;
}
return $check;
}

语法:

1
2
3
4
5
<?php
$url = "http://koonk.com";
$check = checkvalidURL($url);
echo $check; //if returns 1 then URL is valid.
?>

36. 生成二维码

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
function qr_code($data, $type = "TXT", $size ='150', $ec='L', $margin='0')  
{
     $types = array("URL" =--> "http://", "TEL" => "TEL:", "TXT"=>"", "EMAIL" => "MAILTO:");
    if(!in_array($type,array("URL", "TEL", "TXT", "EMAIL")))
    {
        $type = "TXT";
    }
    if (!preg_match('/^'.$types[$type].'/', $data))
    {
        $data = str_replace("\\", "", $types[$type]).$data;
    }
    $ch = curl_init();
    $data = urlencode($data);
    curl_setopt($ch, CURLOPT_URL, 'http://chart.apis.google.com/chart');
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_POSTFIELDS, 'chs='.$size.'x'.$size.'&cht=qr&chld='.$ec.'|'.$margin.'&chl='.$data);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_HEADER, false);
    curl_setopt($ch, CURLOPT_TIMEOUT, 30);
    $response = curl_exec($ch);
    curl_close($ch);
    return $response;
}

语法:

1
2
3
4
<?php
header("Content-type: image/png");
echo qr_code("http://koonk.com", "URL");
?>

37. 计算两个地图坐标之间的距离

1
2
3
4
5
6
7
8
9
10
11
12
function getDistanceBetweenPointsNew($latitude1, $longitude1, $latitude2, $longitude2) {
    $theta = $longitude1 - $longitude2;
    $miles = (sin(deg2rad($latitude1)) * sin(deg2rad($latitude2))) + (cos(deg2rad($latitude1)) * cos(deg2rad($latitude2)) * cos(deg2rad($theta)));
    $miles = acos($miles);
    $miles = rad2deg($miles);
    $miles = $miles * 60 * 1.1515;
    $feet = $miles * 5280;
    $yards = $feet / 3;
    $kilometers = $miles * 1.609344;
    $meters = $kilometers * 1000;
    return compact('miles','feet','yards','kilometers','meters');
}

语法:

1
2
3
4
5
6
7
8
<?php
$point1 = array('lat' => 40.770623, 'long' => -73.964367);
$point2 = array('lat' => 40.758224, 'long' => -73.917404);
$distance = getDistanceBetweenPointsNew($point1['lat'], $point1['long'], $point2['lat'], $point2['long']);
foreach ($distance as $unit => $value) {
    echo $unit.': '.number_format($value,4).'<br />';
}
?>

38. 获取一个特定话题标签的所有 Tweets

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
function getTweets($hash_tag) {
    $url = 'http://search.twitter.com/search.atom?q='.urlencode($hash_tag) ;
    echo "<p>Connecting to <strong>$url</strong> ...</p>";
    $ch = curl_init($url);
    curl_setopt ($ch, CURLOPT_RETURNTRANSFER, TRUE);
    $xml = curl_exec ($ch);
    curl_close ($ch);
    //If you want to see the response from Twitter, uncomment this next part out:
    //echo "<p>Response:</p>";
    //echo "<pre>".htmlspecialchars($xml)."</pre>";
    $affected = 0;
    $twelement = new SimpleXMLElement($xml);
    foreach ($twelement->entry as $entry) {
        $text = trim($entry->title);
        $author = trim($entry->author->name);
        $time = strtotime($entry->published);
        $id = $entry->id;
        echo "<p>Tweet from ".$author.": <strong>".$text."</strong>  <em>Posted ".date('n/j/y g:i a',$time)."</em></p>";
    }
    return true ;
}

39. 添加 th,st,nd 或者 rd 作为数字的后缀

Friday the 13th

1
2
3
4
5
6
7
function ordinal($cdnl){
    $test_c = abs($cdnl) % 10;
    $ext = ((abs($cdnl) %100 < 21 && abs($cdnl) %100 > 4) ? 'th'
            : (($test_c < 4) ? ($test_c < 3) ? ($test_c < 2) ? ($test_c < 1)
            ? 'th' : 'st' : 'nd' : 'rd' : 'th'));
    return $cdnl.$ext;
}

语法:

1
2
3
4
<?php
$number = 10;
echo ordinal($number); //output is 10th
?>

40. 限制文件下载的速度

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
<?php
// local file that should be send to the client
$local_file = 'test-file.zip';
// filename that the user gets as default
$download_file = 'your-download-name.zip';
 
// set the download rate limit (=> 20,5 kb/s)
$download_rate = 20.5;
if(file_exists($local_file) && is_file($local_file)) {
    // send headers
    header('Cache-control: private');
    header('Content-Type: application/octet-stream');
    header('Content-Length: '.filesize($local_file));
    header('Content-Disposition: filename='.$download_file);
 
    // flush content
    flush();    
    // open file stream
    $file = fopen($local_file, "r");    
    while(!feof($file)) {
 
        // send the current file part to the browser
        print fread($file, round($download_rate * 1024));    
 
        // flush the content to the browser
        flush();
 
        // sleep one second
        sleep(1);    
    }    
 
    // close file stream
    fclose($file);}
else {
    die('Error: The file '.$local_file.' does not exist!');
}
?>

41. 把文本转换成图片

1
2
3
4
5
6
7
8
9
10
11
12
<?php
header("Content-type: image/png");
$string = $_GET['text'];
$im = imagecreatefrompng("images/button.png");
$color = imagecolorallocate($im, 255, 255, 255);
$px = (imagesx($im) - 7.5 * strlen($string)) / 2;
$py = 9;
$fontSize = 1;
imagestring($im, fontSize, $px, $py, $string, $color);
imagepng($im);
imagedestroy($im);
?>

42. 获取远程文件的大小

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
function remote_filesize($url, $user = "", $pw = "")
{
    ob_start();
    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_HEADER, 1);
    curl_setopt($ch, CURLOPT_NOBODY, 1);
    if(!empty($user) && !empty($pw))
    {
        $headers = array('Authorization: Basic ' base64_encode("$user:$pw"));
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    }
    $ok = curl_exec($ch);
    curl_close($ch);
    $head = ob_get_contents();
    ob_end_clean();
    $regex = '/Content-Length:\s([0-9].+?)\s/';
    $count = preg_match($regex, $head, $matches);
    return isset($matches[1]) ? $matches[1] : "unknown";
}

语法:

1
2
3
4
5
<?php
$file = "http://koonk.com/images/logo.png";
$size = remote_filesize($url);
echo $size;
?>

43. 使用 imagebrick 进行 pdf 到图像的转换

1
2
3
4
5
6
7
8
9
10
<?php
$pdf_file   = './pdf/demo.pdf';
$save_to    = './jpg/demo.jpg';     //make sure that apache has permissions to write in this folder! (common problem)
//execute ImageMagick command 'convert' and convert PDF to JPG with applied settings
exec('convert "'.$pdf_file.'" -colorspace RGB -resize 800 "'.$save_to.'"', $output, $return_var);
if($return_var == 0) {              //if exec successfuly converted pdf to jpg
    print "Conversion OK";
}
else print "Conversion failed.<br />".$output;
?>

44. 使用 tinyurl 生成短网址

1
2
3
4
5
6
7
8
9
10
11
function get_tiny_url($url)  
{  
    $ch = curl_init();  
    $timeout = 5;  
    curl_setopt($ch,CURLOPT_URL,'http://tinyurl.com/api-create.php?url='.$url);  
    curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);  
    curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,$timeout);  
    $data = curl_exec($ch);  
    curl_close($ch);  
    return $data;  
}

语法:

1
2
3
4
5
<?php
$url = "http://blog.koonk.com/2015/07/Hello-World";
$tinyurl = get_tiny_url($url);
echo $tinyurl;
?>

45. youtube 下载链接生成器

使用下面的 PHP 片段可以让你的用户下载 Youtube 视频

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
function str_between($string, $start, $end)
{
$string = " ".$string; $ini = strpos($string,$start); if ($ini == 0) return ""; $ini += strlen($start); $len = strpos($string,$end,$ini) - $ini; return substr($string,$ini,$len); }
function get_youtube_download_link(){
    $youtube_link = $_GET['youtube'];
    $youtube_page = file_get_contents($youtube_link);
    $v_id = str_between($youtube_page, "&video_id=", "&");
    $t_id = str_between($youtube_page, "&t=", "&");
    $flv_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id";
    $hq_flv_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id&fmt=6";
    $mp4_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id&fmt=18";
    $threegp_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id&fmt=17";
    echo "\t\tDownload (right-click &gt; save as)&#58;\n\t\t";
    echo "<a href=\"$flv_link\">FLV</a>\n\t\t";
    echo "<a href=\"$hq_flv_link\">HQ FLV (if available)</a>\n\t\t";
    echo "<a href=\"$mp4_link\">MP4</a>\n\t\t";
    echo "<a href=\"$threegp_link\">3GP</a><br><br>\n";
}

46. Facebook 样式的时间戳

Facebook (x mins age, y hours ago etc)

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
function nicetime($date)
{
    if(empty($date)) {
        return "No date provided";
    }
    
    $periods         = array("second", "minute", "hour", "day", "week", "month", "year", "decade");
    $lengths         = array("60","60","24","7","4.35","12","10");
    
    $now             = time();
    $unix_date         = strtotime($date);
    
       // check validity of date
    if(empty($unix_date)) {    
        return "Bad date";
    }
    // is it future date or past date
    if($now > $unix_date) {    
        $difference     = $now - $unix_date;
        $tense         = "ago";
        
    } else {
        $difference     = $unix_date - $now;
        $tense         = "from now";
    }
    
    for($j = 0; $difference >= $lengths[$j] && $j < count($lengths)-1; $j++) {
        $difference /= $lengths[$j];
    }
    
    $difference = round($difference);
    
    if($difference != 1) {
        $periods[$j].= "s";
    }
    
    return "$difference $periods[$j] {$tense}";
}

语法:

1
2
3
4
<?php
$date = "2015-07-05 03:45";
$result = nicetime($date); // 2 days ago
?>

select 样式 去三角

<!doctype html>
<html lang=”en”>
<head>
<meta charset=”UTF-8″>
<title>Document</title>
<style>
.styled-select {
width: 240px;
height: 34px;
overflow: hidden;
border-top:0px;
border-left:0px;
border-right:0px;
border-bottom:1px solid #000;
}
.styled-select select {
background: transparent;
width: 240px;
padding: 5px;
font-size: 16px;
height: 34px;
-webkit-appearance: none; /*for chrome*/
border:0px;
}
</style>
</head>
<body>
<div class=”styled-select”>
<select name=”citylist”>
<option value=”0″></option>
<option value=”1″>Ϻ</option>
<option value=”2″></option>
<option value=”3″></option>
<select>
</div>
</body>
<html>

jQuery获取option

jQuery的一些方法理出一些常用的方法:

//获取第一个option的值 
$(‘#test option:first’).val(); 
//最后一个option的值 
$(‘#test option:last’).val(); 
//获取第二个option的值 
$(‘#test option:eq(1)’).val(); 
//获取选中的值 
$(‘#test’).val(); 
$(‘#test option:selected’).val(); 
//设置值为2的option为选中状态 
$(‘#test’).attr(‘value’,’2′); 
//设置第一个option为选中 
$(‘#test option:last’).attr(‘selected’,’selected’); 
$(“#test”).attr(‘value’ , $(‘#test option:last’).val()); 
$(“#test”).attr(‘value’ , $(‘#test option’).eq($(‘#test option’).length – 1).val()); 
//获取select的长度 
$(‘#test option’).length; 
//添加一个option 
$(“#test”).append(“ff”); 
$(“ff”).appendTo(“#test”); 
//添除选中项 
$(‘#test option:selected’).remove(); 
//指定项选中 
$(‘#test option:first’).remove(); 
//指定值被删除 
$(‘#test option’).each(function(){ 
if( $(this).val() == ‘5’){ 
$(this).remove(); 

}); 
$(‘#test option[value=5]’).remove(); 

//获取第一个Group的标签 
$(‘#test optgroup:eq(0)’).attr(‘label’); 
//获取第二group下面第一个option的值 
$(‘#test optgroup:eq(1) :option:eq(0)’).val(); 

获取select中选择的text与value相关的值 

获取select选择的Text : var checkText=$(“#slc1”).find(“option:selected”).text(); 
获取select选择的value:var checkValue=$(“#slc1”).val(); 
获取select选择的索引值: var checkIndex=$(“#slc1 “).get(0).selectedIndex; 
获取select最大的索引值: var maxIndex=$(“#slc1 option:last”).attr(“index”); 

设置select选择的Text和Value 

设置select索引值为1的项选中:$(“#slc1 “).get(0).selectedIndex=1; 
设置select的value值为4的项选中: $(“#slc1 “).val(4); 
设置select的Text值为JQuery的选中: 
$(“#slc1 option”).attr(“selected”, true); 
PS:特别要注意一下第三项的使用哦。看看JQuery的选择器功能是如此地强大呀! 

添加删除option项 

为select追加一个Option(下拉项) 
$(“#slc2”).append(“”+i+””); 
为select插入一个option(第一个位置) 
$(“#slc2”).prepend(“请选择”); 
PS: prepend 这是向所有匹配元素内部的开始处插入内容的最佳方式。 
删除select中索引值最大option(最后一个) 
$(“#slc2 option:last”).remove(); 
删除select中索引值为0的option(第一个) 
$(“#slc2 option[index=’0′]”).remove(); 
删除select中value=’3’的option 
$(“#slc2 option[value=’3′]”).remove(); 
删除select中text=’4’的option 
$(“#slc2 option”).remove();

jquery option取选择的值

语法解释:
1. $(“#select_id”).change(function(){//code第二世界整理发布…});   //为Select添加事件,当选择其中一项时触发
2. var checkText=$(“#select_id”).find(“option:selected”).text();  //获取Select选择的Text
3. var checkValue=$(“#select_id”).val();  //获取Select选择的Value
4. var checkIndex=$(“#select_id “).get(0).selectedIndex;  //获取Select选择的索引值
5. var maxIndex=$(“#select_id option:last”).attr(“index”);  //获取Select最大的索引值
jQuery设置Select选择的Text和Value:
语法解释:
1. $(“#select_id “).get(0).selectedIndex=1;  //设置Select索引值为1的项选中
2. $(“#select_id “).val(4);   //设置Select的Value值为4的项选中
3. $(“#select_id option”).attr(“selected”, true);   //设置Select的Text值为jQuery的项选中

jQuery添加/删除Select的Option项:
语法解释:
1. $(“#select_id”).append(“<option value=’Value’>Text</option>”);  //为Select追加一个Option(下拉项)
2. $(“#select_id”).prepend(“<option value=’0′>请选择</option>”);  //为Select插入一个Option(第一个位置)
3. $(“#select_id option:last”).remove();  //删除Select中索引值最大Option(最后一个)
4. $(“#select_id option[index=’0′]”).remove();  //删除Select中索引值为0的Option(第一个)
5. $(“#select_id option[value=’3′]”).remove();  //删除Select中Value=’3’的Option
5. $(“#select_id option”).remove();  //删除Select中Text=’4’的Option


jquery radio取值,checkbox取值,select取值,radio选中,checkbox选中,select选中,及其相关
获取一组radio被选中项的值
var item = $(‘input[@name=items][@checked]’).val();
获取select被选中项的文本
var item = $(“select[@name=items] option[@selected]”).text();
select下拉框的第二个元素为当前选中值
$(‘#select_id’)[0].selectedIndex = 1;
radio单选组的第二个元素为当前选中值
$(‘input[@name=items]’).get(1).checked = true;

获取值:

文本框,文本区域:$(“#txt”).attr(“value”);
多选框checkbox:$(“#checkbox_id”).attr(“value”);
单选组radio:   $(“input[@type=radio][@checked]”).val();
下拉框select: $(‘#sel’).val();

控制表单元素:
文本框,文本区域:$(“#txt”).attr(“value”,”);//清空内容
                $(“#txt”).attr(“value”,’11’);//填充内容

多选框checkbox: $(“#chk1”).attr(“checked”,”);//不打勾
                $(“#chk2”).attr(“checked”,true);//打勾
                if($(“#chk1”).attr(‘checked’)==undefined) //判断是否已经打勾

单选组radio:    $(“input[@type=radio]”).attr(“checked”,’2′);//设置value=2的项目为当前选中项
下拉框select:   $(“#sel”).attr(“value”,’-sel3′);//设置value=-sel3的项目为当前选中项
               $(“<option value=’1′>1111</option><option value=’2′>2222</option>”).appendTo(“#sel”)//添加下拉框的option
               $(“#sel”).empty();//清空下拉框
—————————————————————————————————-

//遍历option和添加、移除option
function changeShipMethod(shipping){
var len = $(“select[@name=ISHIPTYPE] option”).length
if(shipping.value != “CA”){
$(“select[@name=ISHIPTYPE] option”).each(function(){
if($(this).val() == 111){
$(this).remove();
}
});
}else{
$(“<option value=’111′>UPS Ground</option>”).appendTo($(“select[@name=ISHIPTYPE]”));
}
}

//取得下拉選單的選取值
$(#testSelect option:selected’).text();
或$(“#testSelect”).find(‘option:selected’).text();
或$(“#testSelect”).val();
//////////////////////////////////////////////////////////////////
记性不好的可以收藏下:
1,下拉框:
var cc1 = $(“.formc select[@name=’country’] option[@selected]”).text(); //得到下拉菜单的选中项的文本(注意中间有空格)
var cc2 = $(‘.formc select[@name=”country”]’).val(); //得到下拉菜单的选中项的值
var cc3 = $(‘.formc select[@name=”country”]’).attr(“id”); //得到下拉菜单的选中项的ID属性值
$(“#select”).empty();//清空下拉框//$(“#select”).html(”);
$(“<option value=’1′>1111</option>”).appendTo(“#select”)//添加下拉框的option
稍微解释一下:
1.select[@name=’country’] option[@selected] 表示具有name 属性,
并且该属性值为’country’ 的select元素 里面的具有selected 属性的option 元素;
可以看出有@开头的就表示后面跟的是属性。
2,单选框:
$(“input[@type=radio][@checked]”).val(); //得到单选框的选中项的值(注意中间没有空格)
$(“input[@type=radio][@value=2]”).attr(“checked”,’checked’); //设置单选框value=2的为选中状态.(注意中间没有空格)
3,复选框:
$(“input[@type=checkbox][@checked]”).val(); //得到复选框的选中的第一项的值
$(“input[@type=checkbox][@checked]”).each(function(){ //由于复选框一般选中的是多个,所以可以循环输出
alert($(this).val());
});
$(“#chk1”).attr(“checked”,”);//不打勾
$(“#chk2”).attr(“checked”,true);//打勾
if($(“#chk1″).attr(‘checked’)==undefined){} //判断是否已经打勾

当然jquery的选择器是强大的. 还有很多方法.
<script src=”jquery-1.2.1.js” type=”text/javascript”></script>
<script language=”javascript” type=”text/javascript”>
$(document).ready(function(){
$(“#selectTest”).change(function()
{
//alert(“Hello”);
//alert($(“#selectTest”).attr(“name”));
//$(“a”).attr(“href”,”xx.html”);
//window.location.href=”xx.html”;
//alert($(“#selectTest”).val());
alert($(“#selectTest option[@selected]”).text());
$(“#selectTest”).attr(“value”, “2”);
});
});
</script>

<a href=”#”>aaass</a>
<!–下拉框–>
<select id=”selectTest” name=”selectTest”>
<option value=”1″>11</option>
<option value=”2″>22</option>
<option value=”3″>33</option>
<option value=”4″>44</option>
<option value=”5″>55</option>
<option value=”6″>66</option>
</select>
jquery radio取值,checkbox取值,select取值,radio选中,checkbox选中,select选中,及其相关获取一组radio被选中项的值
var item = $(‘input[@name=items][@checked]’).val();
获取select被选中项的文本
var item = $(“select[@name=items] option[@selected]”).text();
select下拉框的第二个元素为当前选中值
$(‘#select_id’)[0].selectedIndex = 1;
radio单选组的第二个元素为当前选中值
$(‘input[@name=items]’).get(1).checked = true;
获取值:
文本框,文本区域:$(“#txt”).attr(“value”);
多选框checkbox:$(“#checkbox_id”).attr(“value”);
单选组radio: $(“input[@type=radio][@checked]”).val();
下拉框select: $(‘#sel’).val();
控制表单元素:
文本框,文本区域:$(“#txt”).attr(“value”,”);//清空内容
$(“#txt”).attr(“value”,’11’);//填充内容
多选框checkbox: $(“#chk1”).attr(“checked”,”);//不打勾
$(“#chk2”).attr(“checked”,true);//打勾
if($(“#chk1”).attr(‘checked’)==undefined) //判断是否已经打勾
单选组radio: $(“input[@type=radio]”).attr(“checked”,’2′);//设置value=2的项目为当前选中项
下拉框select: $(“#sel”).attr(“value”,’-sel3′);//设置value=-sel3的项目为当前选中项
$(“<optionvalue=’1′>1111</option><optionvalue=’2′>2222</option>”).appendTo(“#sel”)//添加下拉框的option
$(“#sel”).empty();//清空下拉框
获取一组radio被选中项的值
var item = $(‘input[@name=items][@checked]’).val();
获取select被选中项的文本
var item = $(“select[@name=items] option[@selected]”).text();
select下拉框的第二个元素为当前选中值
$(‘#select_id’)[0].selectedIndex = 1;
radio单选组的第二个元素为当前选中值
$(‘input[@name=items]’).get(1).checked = true;
获取值:
文本框,文本区域:$(“#txt”).attr(“value”);
多选框checkbox:$(“#checkbox_id”).attr(“value”);
单选组radio: $(“input[@type=radio][@checked]”).val();
下拉框select: $(‘#sel’).val();
控制表单元素:
文本框,文本区域:$(“#txt”).attr(“value”,”);//清空内容
$(“#txt”).attr(“value”,’11’);//填充内容
多选框checkbox: $(“#chk1”).attr(“checked”,”);//不打勾
$(“#chk2”).attr(“checked”,true);//打勾
if($(“#chk1”).attr(‘checked’)==undefined) //判断是否已经打勾
单选组radio: $(“input[@type=radio]”).attr(“checked”,’2′);//设置value=2的项目为当前选中项
下拉框select: $(“#sel”).attr(“value”,’-sel3′);//设置value=-sel3的项目为当前选中项
$(“<option value=’1′>1111</option><option value=’2′>2222</option>”).appendTo(“#sel”)//添加下拉框的option
$(“#sel”).empty();//清空下拉框

转载自第二世界娱乐共享社区:http://www.offid.cn/i/564/note/100470.html

常用MIME类型(Flv,Mp4的mime类型设置)

转载自:http://www.89525.net/player/Help/2011/0625/83.html

也许你会在纳闷,为什么我上传了flv或MP4文件到服务器,可输入正确地址通过http协议来访问总是出现“无法找到该页”的404错误呢?这就表明mp4格式文件是服务器无法识别的,其实,这是没有在iis中将相应的MIME类型进行设置的原因。那该怎样设置MIME类型呢?

  开启mp4文件的话,需要在 “Internet信息(IIS)管理器”中右击需要更改的网站或目录,可以打开形如下图的窗口(我右击的是文件夹而不是站点,所以您右击站点的话打开的 或许比我的选项卡多,不管怎样您点击HTTP头就可以打开怎样的窗口了):

服务器增加mp4格式的MIME 类型映射设置的具体步骤是:
“开始” > “控制面板” > “管理工具” >“Internet 信息服务(IIS管理器)”,找到您的网站,右击 > “属性” > “HTTP头” > “MIME类型” > “新建”,在“扩展名”框内输入“.mp4”,“MIME类型”框中输入“application/octet-stream”,然后确定即可。“MIME类型”只是一个描述,并非非得输入“flv-application/octet-stream”。

服务器增加flv格式的MIME 类型映射设置的具体步骤是:
“开始” > “控制面板” > “管理工具” >“Internet 信息服务(IIS管理器)”,找到您的网站,右击 > “属性” > “HTTP头” > “MIME类型” > “新建”,在“扩展名”框内输入“.flv”,“MIME类型”框中输入“flv-application/octet-stream”,然后确定即可。“MIME类型”只是一个描述,并非非得输入“flv-application/octet-stream”。

MIME类型就是设定某种扩 展名的文件用一种应用程序来打开的方式类型,当该扩展名文件被访问的时候,浏览器会自动使用指定应用程序来打开。多用于指定一些客户端自定义的文件名,以 及一些媒体文件打开方式。

下面列出常用的文件对 应的MIME类型:

Mime-Types(mime类型) Dateiendung(扩展名) Bedeutung
application/msexcel *.xls *.xla Microsoft Excel Dateien
application/mshelp *.hlp *.chm Microsoft Windows Hilfe Dateien
application/mspowerpoint *.ppt *.ppz *.pps *.pot Microsoft Powerpoint Dateien
application/msword *.doc *.dot Microsoft Word Dateien
application/octet-stream *.exe exe
application/pdf *.pdf Adobe PDF-Dateien
application/post****** *.ai *.eps *.ps Adobe Post******-Dateien
application/rtf *.rtf Microsoft RTF-Dateien
application/x-httpd-php *.php *.phtml PHP-Dateien
application/x-java****** *.js serverseitige Java******-Dateien
application/x-shockwave-flash *.swf *.cab Flash Shockwave-Dateien
application/zip *.zip ZIP-Archivdateien
audio/basic *.au *.snd Sound-Dateien
audio/mpeg *.mp3 MPEG-Dateien
audio/x-midi *.mid *.midi MIDI-Dateien
audio/x-mpeg *.mp2 MPEG-Dateien
audio/x-wav *.wav Wav-Dateien
image/gif *.gif GIF-Dateien
image/jpeg *.jpeg *.jpg *.jpe JPEG-Dateien
image/x-windowdump *.xwd X-Windows Dump
text/css *.css CSS Stylesheet-Dateien
text/html *.htm *.html *.shtml -Dateien
text/java****** *.js Java******-Dateien
text/plain *.txt reine Textdateien
video/mpeg *.mpeg *.mpg *.mpe MPEG-Dateien
video/vnd.rn-realvideo *.rmvb realplay-Dateien
video/quicktime *.qt *.mov Quicktime-Dateien
video/vnd.vivo *viv *.vivo Vivo-Dateien