<?   //Php做的端口嗅探器–可以指定网站和端口 //并返回嗅探结果     function http_request($server, $port) {     $data = "";     $query = "HEAD / HTTP/1.0";     $fp = fsockopen($server, $port);     if($fp) {     fputs($fp, $query."rnn");     while(!feof($fp)) {     $data .=