php function undefined when it is defined - php

Question

I am having some problem with scope i assume, but i cannot for the life of me figure out what that problem is...
I keep getting a function undefined error for the following three functions whenever they are called; addUser, removeUser, updatePlayer. Anyone have any idea what's wrong? full code below (it is a pocketmine plugin):
<?php
/*
__PocketMine Plugin__
name=X
description=X
version=0.0.1
author=X
class=X
apiversion=10
*/
class X implements Plugin {
private $api;
public $continents = array();
public $allContinents = array("NA" => 0, "SA" => 0, "AF" => 0, "AS" => 0, "OC" => 0, "EU" => 0);
public function __construct(ServerAPI $api, $server = false){
$this->api = $api;
}
public function init(){
//Initialize the on player join event handler
$this->api->addHandler("player.spawn", array($this, "onPlayerJoin"));
$this->api->addHandler("player.quit", array($this, "onPlayerQuit"));
//Setup Config
$this->path = $this->api->plugin->configPath($this);
$this->msgs = new Config($this->path . "config.yml", CONFIG_YAML, array("AuthToken" => "", "Delay" => "5"));
$this->msgs = $this->api->plugin->readYAML($this->path . "config.yml");
}
// <--- updatePlayer --->
public function updatePlayer($user) {
}
// <--- Country Handler --->
public function addUser($user, $continents, $allContinents) {
$ip = $user->ip;
$username = $user->username;
$gi = geoip_open($this->path ."GeoIP.dat",GEOIP_STANDARD);
$continent = geoip_continent_code_by_name($gi, $ip);
array_push($continents, $username);
$continents[$username] = $continent;
$allContinents[$continent] += 1;
return $continents;
return $allContinents;
}
public function removeUser($user, $continents, $allContinents) {
$username = $user->username;
$continent = $continents[$username];
unset($continents[$username]);
$allContinents[$continent] -= 1;
return $continents;
return $allContinents;
}
// <--- Rquest Ad --->
public function requestAd() {
}
/*public function send() {
while(true) {
sleep(240);
}
}
}*/
//On player join event handler
public function onPlayerJoin($user){
$username = $user->username;
addUser($user);
updatePlayer($user);
//Check if plugin is setup
if ($this->api->ban->isOp($username) && $this->msgs["AuthToken"] == "") {
$this->api->chat->sendTo(false, "Please visit X to setup X.", $username);
}
}
public function onPlayerQuit($user){
removeUser($user);
}
public function __destruct(){
}
}
?>

Answer 1

If you're calling them from the same class or an extended class then you need to use $this.
public function onPlayerJoin($user){
$username = $user->username;
$this->addUser($user);
$this->updatePlayer($user);
}
Unless it's a static function, then you would use self::.

Answer 2

You need to instantiate an instance of class X, then call the functions as members of that object. For example:
$myX = new X();
$myX->addUser();
Cheers