php代码
<html> <head> <meta http-equiv="content-type" content="text/html;charset=utf-8"> <title>查询百度link?ulr=真实链接表单</title> </head> <body> <?php /* getrealurl 获取301、302重定向后的URL地址 by enenba.com @param str $url 查询 $return str 定向后的url的真实url */ function getrealurl($url){ $header = get_headers($url,1); if (strpos($header[0],'301') || strpos($header[0],'302')) { if(is_array($header['Location'])) { return $header['Location'][count($header['Location'])-1]; }else{ return $header['Location']; } }else { return $url; } } $input = '<form method="get" action=""><input type="text" name="url" id="url" style="width:800px;" /><input type="submit" value="提交" /></form><body></html>'; $url = isset($_GET['url'])?$_GET['url']:''; if(empty($url)) exit($input); $urlreal = getrealurl($url); echo '真实的url为:'.$urlreal; $urlreal = ltrim($urlreal,'http://'); $search = '/ebac5573358cc3c0659257bfcf54([0-9a-f]+)/i'; preg_match($search,$url,$r); $url_encode = $r[1]; unset($r); echo '<br/>密文部分为:'.$url_encode.'<br/>'; $urlreal_arr = str_split($urlreal); $url_encode_arr = str_split($url_encode,2); echo '<br />'; echo $input; ?>