• 取得301转向后的地址


    PHP CODE:

    <?php
    function get_301($url){
        while (true){
            $matches = parse_url($url);
            if ( ! @$matches['host']){
                throw new Exception('url wrong!');
            }
            $host = @$matches['host'];
            $matches['query']=isset($matches['query'])?$matches['query']:null;
            $path = @$matches['path'] ? @$matches['path'].(@$matches['query'] ? '?'.@$matches['query'] : '') : '/';
            $port = !empty($matches['port']) ? $matches['port'] : 80;
            $out = "GET $path HTTP/1.1\r\n";
            $out .= "Host: $host\r\n";
            $out .= "User-Agent: Mozilla/5.0 (Android; Tablet; rv:14.0) Gecko/14.0 Firefox/14.0\r\n";//return mp4
            $out .= "Referer: http://$host\r\n";
            $out .= "Connection: Close\r\n\r\n";
            $timeout=5;
            $fp = fsockopen( $host, $port, $errno, $errstr,$timeout);
            stream_set_blocking($fp, TRUE);
            stream_set_timeout($fp, $timeout);
            @fwrite($fp, $out);
            $status = stream_get_meta_data($fp);
            if($status['timed_out']) {
                @fclose($fp);
                throw new Exception('time out!');
            }
            $ru=false;
            $status=true;
            while ( ! feof($fp)) {
                if(($header = fgets($fp)) && ($header == "\r\n" ||  $header == "\n")) {
                    break 2;
                }
                $header=trim($header);
                if (preg_match('/^\s*Location:\s*(.*)$/si', $header,$match)){
                    @fclose($fp);
                    $url=trim($match[1]);
                    if (!preg_match('/^http:\/\//si',$url)){
                        $url=$matches['scheme']."://".$matches['host'].$url;
                    }
                    continue 2;
                }
                if($status&&preg_match_all("/http\/[0-9]\.[0-9]\s*(\d{3}).*/i",$header,$match,2)){
                    if(trim($match[0][1])==200){
                        @fclose($fp);
                        break 2;
                    }
                }
            }
            @fclose($fp);
        }
        return $url;
    }
    echo get_301('http://once.unicornmedia.com/now/od/auto/dd04fb63-53af-417a-be12-2abf285306e6/8b7e3c6e-8700-4656-b289-5af7250ef118/0-b0u7nb80/content.once');
    exit;
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  • 原文地址:https://www.cnblogs.com/liushannet/p/2993711.html
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