php fsockopen多線程實現

 public function  gateway($url,$time_out = "60")
    {
        $urlinfo    = parse_url($url);
        $errno      = "";
        $errstr     = "";
        if($urlinfo['scheme']=="https"){
            $transports      = "ssl://";
            $urlinfo['port'] = "443";
        }else{
            $transports      = "tcp://";
            $urlinfo['port'] = "803";
        }
        if(isset($urlinfo['query'])){
            $query = '?'.$urlinfo['query'];
        }else{
            $query = '';
        }
        $urlinfo['path'] = $urlinfo['path'].$query;
        $fp              = @fsockopen($transports.$urlinfo['host'],$urlinfo['port'],$errno,$errstr,$time_out);
        if(!$fp){
            die("ERROR: $errno - $errstr<br/>\n");
        }else{
            fputs($fp,"GET ".$urlinfo['path']." HTTP/1.1\r\n");
            fputs($fp,"Host: ".$urlinfo['host']."\r\n");
            fputs($fp,"Content-type: application/x-www-form-urlencoded\r\n");
            fputs($fp,"Content-length: ".strlen($urlinfo['query'])."\r\n");
            fputs($fp,"Connection: close\r\n\r\n");
            fputs($fp,$urlinfo['query']."\r\n\r\n");
            fclose($fp);
        }
    }