Мониторинг одного сервера

<?

class CS_Server {

    private function cutchar(&$string){
        $char = substr($string, 0, 1);
        $string = substr($string, 1);
        return $char;
    }

    private function cutbyte(&$string){
        $byte = ord(substr($string, 0, 1));
        $string = substr($string, 1);
        return $byte;
    }

    private function cutstring(&$string){
        $str = substr($string, 0, StrPos($string, chr(0)));
        $string = substr($string, StrPos($string, chr(0))+1);
        return $str;
    }

    private function cutshort(&$string){
        $short = substr($string, 0, 2);
        list(,$short) = @unpack("S", $short);
        $string = substr($string, 2);
        return $short;
    }

    private function cutlong(&$string){
        $long = substr($string, 0, 4);
        list(,$long) = @unpack("l", $long);
        $string = substr($string, 4);
        return $long;
    }

    private function pastelong($long){
        return pack("l", $long);
    }

    private function cutfloat(&$string){
        $float = substr($string, 0, 4);
        list(,$float) = @unpack("f", $float);
        $string = substr($string, 4);
        return $float;
    }

    private function request($request,$host,$port){
        $request = "\xFF\xFF\xFF\xFF".$request."\x00";
        $fp = @fsockopen('udp://'.$host, $port);
        if (!$fp) return false;
        @fwrite($fp, $request);
        socket_set_timeout($fp,1);
        $string=fread($fp,1);
        $socket_status=socket_get_status($fp);
        $socket_status=$socket_status["unread_bytes"];
        if ($socket_status == 0){
            @fclose($fp);
            return false;
        }
        $string.=fread($fp,$socket_status);
        @fclose($fp);
        return $string;
    }

    public function A2A_PING($host, $port) {
        $st = $this->request("\x69",$host,$port);
        if (!$st) return false;
        $st = substr($st, 4);
        if (substr($st, 0, 1) != "\x6A") return false; else return true;
    }

    public function A2S_INFO($host, $port) {
        $st = $this->request("\x54Source Engine Query",$host,$port);
        if (!$st) return false;
        $st = substr($st, 4);
        if (substr($st, 0, 1) == "\x49") {
            $result['Type'] = $this->cutchar($st); // Char: 'I' (0x49) - For Source
            $result['Version'] = $this->cutbyte($st); // Byte: Network version
            $result['Server Name'] = $this->cutstring($st); // String: The server's name, eg: "Recoil NZ CS Server #1"
            $result['Map'] = $this->cutstring($st); // String: The current map being played, eg: "de_dust"
            $result['Game Directory'] = $this->cutstring($st); // String: The name of the folder containing the game files, eg: "cstrike"
            $result['Game Description'] = $this->cutstring($st); // String: A friendly string name for the game type, eg: "Counter Strike: Source"
            $result['AppID'] = $this->cutshort($st); // Short: Steam Application ID
            $result['Number of players'] = $this->cutbyte($st); // Byte: The number of players currently on the server
            $result['Maximum players'] = $this->cutbyte($st); // Byte: Maximum allowed players for the server
            $result['Number of bots'] = $this->cutbyte($st); // Byte: Number of bot players currently on the server
            $result['Dedicated'] = $this->cutchar($st); // Char: 'l' for listen, 'd' for dedicated, 'p' for SourceTV
            $result['OS'] = $this->cutchar($st); // Char: Host operating system. 'l' for Linux, 'w' for Windows
            $result['Password'] = $this->cutbyte($st); // Byte: If set to 0x01, a password is required to join this server
            $result['Secure'] = $this->cutbyte($st); // Byte: if set to 0x01, this server is VAC secured
            $result['Game Version'] = $this->cutstring($st); // String: The version of the game, eg: "1.0.0.14"
        } elseif (substr($st, 0, 1) == "\x6D") {
            $result['Type'] = $this->cutchar($st); // Char: 'm' (0x6D) - For GoldSrc
            $result['Game IP'] = $this->cutstring($st); // String: Game Server IP address and port
            $result['Server Name'] = $this->cutstring($st); // String: The server's name, eg: "Recoil NZ CS Server #1"
            $result['Map'] = $this->cutstring($st); // String: The current map being played, eg: "de_dust"
            $result['Game Directory'] = $this->cutstring($st); // String: The name of the folder containing the game files, eg: "cstrike"
            $result['Game Description'] = $this->cutstring($st); // String: A friendly string name for the game type, eg: "Counter  Strike: Source"
            $result['Number of players'] = $this->cutbyte($st); // Byte: The number of players currently on the server
            $result['Maximum players'] = $this->cutbyte($st); // Byte: Maximum allowed players for the server
            $result['Version'] = $this->cutbyte($st); // Byte: Network version
            $result['Dedicated'] = $this->cutchar($st); // Char: 'l' for listen, 'd' for dedicated, 'p' for SourceTV
            $result['OS'] = $this->cutchar($st); // Char: Host operating system. 'l' for Linux, 'w' for Windows
            $result['Password'] = $this->cutbyte($st); // Byte: If set to 0x01, a password is required to join this server
            $result['IsMod'] = $this->cutbyte($st); // Byte: If set to 0x01, this byte is followed by ModInfo
            $result['Secure'] = $this->cutbyte($st); // Byte: if set to 0x01, this server is VAC secured
            $result['Number of bots'] = $this->cutbyte($st); // Byte: Number of bot players currently on the server
            if ($result['IsMod'] == 1) {
                  $result['URLInfo'] = $this->cutstring($st); // String: URL containing information about this mod
                  $result['URLDL'] = $this->cutstring($st); // String: URL to download this mod
                  $result['Nul'] = $this->cutbyte($st); // Byte: 0x00
                  $result['ModVersion'] = $this->cutlong($st); // Long: Version of the installed mod
                  $result['ModSize'] = $this->cutlong($st); // Long: The download size of this mod
                  $result['SvOnly'] = $this->cutbyte($st); // Byte: If 1 this is a server side only mod
                  $result['ClDLL'] = $this->cutbyte($st); // Byte: If 1 this mod has a custom client dll
            }
        } else return false;
        return $result;
    }

    public function A2S_SERVERQUERY_GETCHALLENGE($host, $port){
        $st = $this->request("\x57",$host,$port);
        if (!$st) return false;
        $st = substr($st, 4);
        if (substr($st, 0, 1) != "\x41") return false; else return $this->cutlong(substr($st, 1));
    }

    public function A2S_RULES($host, $port) {
        $challenge = $this->A2S_SERVERQUERY_GETCHALLENGE($host, $port);
        $st = $this->request("\x56".  $this->pastelong($challenge),$host,$port);
        if (!$st) return false;
        $st=substr($st, 4);
        if (substr($st, 0, 1) == "\x41") {
          $orolbi = substr($st, 1);
          $challenge = $this->cutlong($orolbi);
          $st = $this->request("\x56". $this->pastelong($challenge),$host,$port);
          if (!$st) return false;
          $st = substr($st, 4);
        }
        if (substr($st, 0, 1) != "\x45") return false;
        $result['Type'] = $this->cutchar($st); // Char: Should be equal to 'E'
        $result['Num Rules'] = $this->cutshort($st); // Short: The number of rules reported in response
        for ($i = 1; $i <= $result['Num Rules']; $i++) {
          $result['Rule Name'][$i] = $this->cutstring($st); // String: The name of the rule
          $result['Rule Value'][$i] = $this->cutstring($st); // String: The rule's value
        }
        return $result;
    }

    public function A2S_PLAYER($host, $port) {
        $challenge = $this->A2S_SERVERQUERY_GETCHALLENGE($host, $port);
        $st = $this->request("\x55". $this->pastelong($challenge),$host,$port);
        if (!$st) return false;
        $st = substr($st, 4);
        if (substr($st, 0, 1) == "\x41") {

          $orolbi = substr($st, 1);
          $challenge = $this->cutlong($orolbi);
          $st = $this->request("\x55". $this->pastelong($challenge),$host,$port);
          if (!$st) return false;
          $st = substr($st, 4);
        }
        if (substr($st, 0, 1) != "\x44") return false;
        $result['Type'] = $this->cutchar($st); // Char: Should be equal to 'D'
        $result['Num Players'] = $this->cutbyte($st); // Byte: The number of players reported in response
        for ($i = 1; $i <= $result['Num Players']; $i++) {
          $result['Index'][$i] = $this->cutbyte($st); // Byte: The index into [0.. Num Players] for this entry
          $result['Player Name'][$i] = $this->cutstring($st); // String: Player's name
          $result['Kills'][$i] = $this->cutlong($st); // Long: Number of kills this player has
          $result['Time connected'][$i] = $this->cutfloat($st); // Float: The time in seconds this player has been connected
        }
        return $result;
    }
}


$cs_server = new CS_Server;

echo "<br/><br/>";
print_r($cs_server->A2S_INFO("0.0.0.0",27015));
echo "<br/><br/>";
print_r($cs_server->A2S_RULES("0.0.0.0",27015));
echo "<br/><br/>";
print_r($cs_server->A2S_PLAYER("0.0.0.0",27015));
echo "<br/><br/>";
print_r($cs_server->A2A_PING("0.0.0.0",27015));

?>