提取Gregarius中的一个函数。可以把网页中的相对路径自动转化成绝对路径。

<?

functionrelative_to_absolute($content,$feed_url){

preg_match('/(http|https|ftp):///',$feed_url,$protocol);

$server_url=preg_replace("/(http|https|ftp|news):///","",$feed_url);

$server_url=preg_replace("//.*/","",$server_url);

if($server_url==''){

return$content;

}

if(isset($protocol[0])){

$new_content=preg_replace('/href="//','href="'.$protocol[0].$server_url.'/',$content);

$new_content=preg_replace('/src="//','src="'.$protocol[0].$server_url.'/',$new_content);

}else{

$new_content=$content;

}

return$new_content;

}

?>