php 正则 网址 url http 常用

 

$source = $_SERVER['HTTP_HOST'];
if (preg_match('/(http:\/\/)|(https:\/\/)/i', $source)) {
    $source = preg_replace('/(http:\/\/)|(https:\/\/)/i', '', $source);
    // 去掉 h t t p: //和 h t t ps: //前缀
}