php把相对路径转换成绝对路径方法

我们经常会碰到采集内容时,要补全地址是吧,下面我们来看看这款php把相对路径转换成绝对路径方法吧,相对路径转化成绝对路径实例代码如下:

<?php
function relative_to_absolute($content, $feed_url) {  
    preg_match(&#39;/(http|https|ftp):///&#39;, $feed_url, $protocol);  
    $server_url = preg_replace("/(http|https|ftp|news):///", "", $feed_url);  
    $server_url = preg_replace("//.*/", "", $server_url); 
 
    if ($server_url == &#39;&#39;) {  
        return $content;  
    } 
 
    if (isset($protocol[0])) {  
        $new_content = preg_replace(&#39;/href="//&#39;, &#39;href="&#39;.$protocol[0].$server_url.&#39;/&#39;, $content);  
        $new_content = preg_replace(&#39;/src="//&#39;, &#39;src="&#39;.$protocol[0].$server_url.&#39;/&#39;, $new_content);  
    } else {  
        $new_content = $content;  
    }  
    return $new_content;  
} 
//取得所有链接 
function get_all_url($code){  
    preg_match_all(&#39;/<a\s+href=[\"|\&#39;]?([^>\"\&#39; ]+)[\"|\&#39;]?\s*[^>]*>([^>]+)<\/a>/i&#39;,$code,$arr);  
    return array(&#39;name&#39;=>$arr[2],&#39;url&#39;=>$arr[1]);  
}

本文链接:

收藏随意^^请保留教程地址.