How to use class in php - php

Question

I have this php class and I don't know how to use it. I know a little bit php but I don't know how to use/call a class.
<?php
Class Checkserver {
static function getString(&$packet){
$str = "";
$n = strlen($packet);
for($i=0;($packet[$i]!=chr(0)) && ($i < $n);++$i)
$str .= $packet[$i];
$packet = substr($packet, strlen($str));
return trim($str);
}
static function getChar(&$packet){
$char = $packet[0];
$packet = substr($packet, 1);
return $char;
}
function serverInfo($server) {
list($ip,$port) = explode(":", $server);
$fp = #fsockopen('udp://'.$ip, $port);
if($fp) {
stream_set_timeout($fp, 2);
fwrite($fp,"\xFF\xFF\xFF\xFFTSource Engine Query\0\r");
$temp = fread($fp, 4);
$status = socket_get_status($fp);
if($status['unread_bytes']>0) {
$temp = fread($fp, $status['unread_bytes']);
$version = ord(self::getChar($temp));
$array = array();
$array['status'] = "1";
if($version == 109) {
$array['ip'] = self::getString($temp);
$temp = substr($temp, 1);
$array['hostname'] = self::getString($temp);
$temp = substr($temp, 1);
$array['mapname'] = self::getString($temp);
$temp = substr($temp, 1);
self::getString($temp);
$temp = substr($temp, 1);
self::getString($temp);
$temp = substr($temp, 1);
$array['players'] = ord(self::getChar($temp));
$array['maxplayers'] = ord(self::getChar($temp));
} elseif($version == 73) {
self::getChar($temp);
$array['hostname'] = self::getString($temp);
$temp = substr($temp, 1);
$array['mapname'] = self::getString($temp);
$temp = substr($temp, 1);
self::getString($temp);
$temp = substr($temp, 1);
self::getString($temp);
$temp = substr($temp, 3);
$array['players'] = ord(self::getChar($temp));
$array['maxplayers'] = ord(self::getChar($temp));
}
} else {
$array['hostname'] = 'Server offline';
$array['mapname'] = '-';
$array['players'] = '0';
$array['maxplayers'] = '0';
$array['status'] = '0';
}
}
return $array;
}
}
?>
I have tried to query a server by writing this in the same file where the class is:
<?php
$newServer = serverInfo();
$date = $newServer->serverInfo("127.0.0.1:27015");
?>
But I can't get it to work. How can I query a server with udp, with this class and print the output ?

Answer 1

serverInfo belongs to the class, so you need to create a new instance of the class before you can use it.
$newServer = new Checkserver();
$date = $newServer->serverInfo("127.0.0.1:27015");