php正则表达式解析字符串里的所有URL地址

本文章给大家介绍在php正则表达式解析字符串里的所有URL地址实现代码，有需要了解学习的朋友可进入参考。

分享一个同事写的URL正则表达式，缺点不支持中文URL：

代码如下	复制代码
(http[s]{0,1}|ftp)://[a-zA-Z0-9.-]+.([a-zA-Z]{2,4})(:d+)?(/[a-zA-Z0-9.-~!@#$%^&*+?:_/=]*)?

下面介绍一个可以支持中文正则url

 

代码如下	复制代码
var regexp = new RegExp("(http[s]{0,1}|ftp)://[a-zA-Z0-9.-]+.([a-zA-Z]{2,4})(:d+)?(/[a-zA-Z0-9.-~!@#$%^&*+?:_/=]*)?", "gi"); var urls = textbox.value.match(regexp) || [];//textbox为文本框 console.log(urls);

实例

代码如下

复制代码

// $html        = the html on the page // http://pic2.phprm.com/2013/05/22/$current_url.jpg = the full url that the html came from (only needed for $repath) // $repath      = converts ../ and / and // urls to full valid urls function pageLinks($html, $current_url = "", $repath = false){     preg_match_all("/    $links = array();     if(isset($matches[2])){         $links = $matches[2];     }     if($repath && count($links) > 0 && strlen($current_url) > 0){         $pathi      = pathinfo($current_url);         $dir        = $pathi["dirname"];         $base       = parse_url($current_url);         $split_path = explode("/", $dir);         $url        = "";         foreach($links as $k => $link){             if(preg_match("/^../", $link)){                 $total = substr_count($link, "../");                 for($i = 0; $i                     array_pop($split_path);                 }                 $url = implode("/", $split_path) . "/" . str_replace("../", "", $link);             }elseif(preg_match("/^///", $link)){                 $url = $base["scheme"] . ":" . $link;             }elseif(preg_match("/^/|^.//", $link)){                 $url = $base["scheme"] . "://" . $base["host"] . $link;             }elseif(preg_match("/^[a-zA-Z0-9]/", $link)){                 if(preg_match("/^http/", $link)){                     $url = $link;                 }else{                     $url       = $dir . "/" . $link;                 }             }             $links[$k] = $url;         }     }     return $links; } header("content-type: text/plain"); $url = "http://www.phprm.com"; $html = file_get_contents($url); // Gets links from the page: print_r(pageLinks($html)); // Gets links from the page and formats them to a full valid url: print_r(pageLinks($html, $url, true));