[sde]

i spent some time a while ago on this. i had a class working for 1.6 (originally coded by madhatter) but then the implementation changed with source. lots of tweaking, trial, and error and i finally got it working. the last few lines instanciates the class and runs the query. enjoy

PHP Code:

<?
function get_float32($fourchars) {
    $bin='';
    for($loop = 0; $loop <= 3; $loop++) { 
        $bin = str_pad(decbin(ord(substr($fourchars, $loop, 1))), 8, '0', STR_PAD_LEFT).$bin; 
    } 
    $exponent = bindec(substr($bin, 1, 8)); 
    $exponent = ($exponent)? $exponent - 127 : $exponent; 
    if($exponent) { 
        $int = bindec('1'.substr($bin, 9, $exponent)); 
        $dec = bindec(substr($bin, 9 + $exponent)); 
        $time = "$int.$dec";     
        return number_format($time / 60, 2); 
    } else { 
        return 0.0; 
    } 
}

class sourceQueryCS{

  function sourceQueryCS($ip,$port){

    $this->ip=$ip;
    $this->port=$port;
    $this->address=$ip.":".$port;
    $this->hostname = "";
    $this->map = "";
    $this->mod = "";
    $this->modname = "";
    $this->active = "";
    $this->max = "";
    $this->cvars = array();
    $this->players = array();
    $this->excluded_cvars = array();
    
    /*
    // you can define cvars you wish to exclude
    // this may be useful if you are looping through
    // the cvar array instead of just calling individual cvars
    
    $this->excluded_cvars = array(
      "mp_falldamage",
      "mp_weaponstay",
      "mp_forcerespawn",
      "mp_autocrosshair",
      "decalfrequency",
      "coop",
      "mp_teamlist",
      "mp_allowNPCs",
      "sv_stopspeed",
      "sv_noclipaccelerate",
      "sv_noclipspeed",
      "sv_specaccelerate",
      "sv_specspeed",
      "sv_specnoclip",
      "sv_maxspeed",
      "sv_accelerate",
      "sv_airaccelerate",
      "sv_wateraccelerate",
      "sv_waterfriction",
      "sv_rollspeed",
      "sv_rollangle",
      "sv_friction",
      "sv_bounce",
      "sv_stepsize",
      "r_VehicleViewDampen",
      "r_JeepViewDampenFreq",
      "r_JeepViewDampenDamp",
      "r_JeepViewZHeight",
      "r_AirboatViewDampenFreq",
      "r_AirboatViewDampenDamp",
      "r_AirboatViewZHeight",
      "sv_pausable"
    );
    */
    
    $this->_sock = fsockopen("udp://".$this->ip,$this->port, $errno, $errstr, 3);

    if (!$this->_sock) {
      echo "unable to connect to ".$this->ip.":".$this->port;
      exit;
    }
    
    $this->getInfo();
    $this->getRules();
    $this->getPlayers();

    fclose($this->_sock);
  }
  
  function getInfo(){
    $array = array();
    $query=chr(0xFF).chr(0xFF).chr(0xFF).chr(0xFF).chr(0x54);
    fwrite($this->_sock, $query);
    socket_set_timeout($this->_sock, 2,0);
      $buffer=fread($this->_sock,1);
      $stat=socket_get_status($this->_sock);
      $buffer.=fread($this->_sock, $stat["unread_bytes"]);
      
    $buffer=substr($buffer,6);
    $text="";
        $count=0; 
        $arr=array(0);
        do { 
            $tmp=substr($buffer,0,1);$buffer=substr($buffer,1); 
            if (!ord($tmp)) { $array[$count++]=$text; $text=""; }
            else { $text.=$tmp; }
        } while ($count<5);
        for($i=0;$i<=6;$i++, $count++) {
            $tmp=substr($buffer,0,1);$buffer=substr($buffer,1);
            if($count==8 || $count==9)
                $array[$count]=$tmp;
            else
                $array[$count]=ord($tmp);
        } //count = 12
        if($array[$count-1]) { //if ismod
            do {
                $tmp=substr($buffer,0,1);$buffer=substr($buffer,1); 
                if (ord($tmp)!=0)
                    $array[$count].=$tmp; // mod website [12]
            } while(ord($tmp)!=0);
            $count++;
            do {
                $tmp=substr($buffer,0,1);$buffer=substr($buffer,1); 
                if (ord($tmp)!=0)
                    $array[$count].=$tmp; // mod FTP [13]
            } while(ord($tmp)!=0);
            $count++;
            $array[$count++]=ord(substr($buffer,0,1)); $buffer=substr($buffer,1); //Dummy bit? [14] o_0 -- SHOULD be server-only bit... ^_^
            $tmp=substr($buffer,0,4);$buffer=substr($buffer,4); 
            for($j=0;$j<4;$j++) {
                $array[$count]+=(pow(256,$j) * ord(substr($tmp,$j,1))); //Ver [15]
            } $count++;                
            $tmp=substr($buffer,0,4);$buffer=substr($buffer,4); 
            for($j=0;$j<4;$j++) {
                $array[$count]+=(pow(256,$j) * ord(substr($tmp,$j,1))); //Size [16]
            } $count++;
            $array[$count++]=ord(substr($buffer,0,1));$buffer=substr($buffer,1); //server-only [17]
            $array[$count++]=ord(substr($buffer,0,1));$buffer=substr($buffer,1); //custom client.dll [18]
            $array[$count++]=ord(substr($buffer,0,1));$buffer=substr($buffer,1); //Secure! [19]
        } else {
            for($i=0;$i<8;$i++)
                $array[$count++]='\0';
        }
        
        $this->hostname = $array[0];
        $this->map      = $array[1];
        $this->mod      = $array[2];
        $this->modname  = $array[3];
        $this->active   = $array[6];
        $this->max      = $array[7];
  }
  
  function getplayers(){
    $query=chr(0xFF).chr(0xFF).chr(0xFF).chr(0xFF).chr(0x55);
    fwrite($this->_sock, $query);
    socket_set_timeout($this->_sock, 2,0);
      $buffer=fread($this->_sock,1);
      $stat=socket_get_status($this->_sock);
      $buffer.=fread($this->_sock, $stat["unread_bytes"]);
  
    $buffer=substr($buffer,5);
        $count=ord(substr($buffer,0,1)); //Num active players
        $buffer=substr($buffer,1);
        $tfrags="";
        $ttime=0;
        $array=array(0);
        for($i=0;$i<$count;$i++){
            $rfrags=0.0;
            $rtime=0;
            $stime=0;
            $tind=ord(substr($buffer,0,1));
            $buffer=substr($buffer,1);
            $tname="";
            do {
                $tmp=substr($buffer,0,1);
                $buffer=substr($buffer,1);
                $tname.=$tmp;
            }while(ord($tmp)!=0);
            
            $tfrags=substr($buffer,0,4);
            $buffer=substr($buffer,4);
            for($j=0;$j<4;$j++) {
                $rfrags+=(pow(256,$j) * ord(substr($tfrags,$j,1)));
            }
            if($rfrags > 2147483648) {
                $rfrags-=4294967296;
            }
            $tmp=substr($buffer,0,4);
            $buffer=substr($buffer,4);
            $rtime=get_float32($tmp);
            $array[$i]=array("index" => $tind,"name" => $tname,"frags" => $rfrags, "time" => $rtime);
      }
      
      $this->players = $array;
  }
  
  function getRules(){
    $array = array();
    $rules = array();
    $query=chr(0xFF).chr(0xFF).chr(0xFF).chr(0xFF).chr(0x56);
    fwrite($this->_sock, $query);
    socket_set_timeout($this->_sock, 2,0);
      $buffer=fread($this->_sock,1);
      $stat=socket_get_status($this->_sock);
      $buffer.=fread($this->_sock, $stat["unread_bytes"]);

      $array = explode(chr(0),$buffer);
      $count = (count($array)-1);
      
      for($i=1;$i<$count;$i++){
        if(in_array($array[$i],$this->excluded_cvars)){
          $i++;
          continue;
        }
        
        $rules[$array[$i]]=$array[++$i];
      }
      
      $this->cvars = $rules;
  }
}

header("content-type: text/plain");
$sq = new sourceQueryCS("192.18.1.250",27016);
print_r($sq);
?>