how to fix the error?

The idea of a plug-in that began after the issuance of a timer , after which the player could take over the whale . However , something went wrong

Errror:

Code:

2015-06-27 [17:20:16] [Server thread / NOTICE]: Information Player "___julia___" is not found, creates a new profile
2015-06-27 [17:20:16] [Server thread / INFO]: ___ JULIA ___ [/ 81.177.127.62:26013] entered with id entity 240 (world, -23, 77 , 139 )
2015-06-27 [17:20:16] [Server thread / CRITICAL]: Could not execute task pocketmine \ scheduler \ CallbackTask: Undefined index: ___JULIA___
2015-06-27 [17:20:16] [Server thread / NOTICE]: ArrayOutOfBoundsException: "Undefined index: ___JULIA___" (E_NOTICE) in "/ UltraKit / src / BlackJIeB / UltraKit" at line 60

Code:

PHP:

public function onEnable(){
$this->getServer()->getPluginManager()->registerEvents($this, $this);
$this->particles[] = new FloatingTextParticle(new Vector3(-47.4, 74.7, 131.6), "", TextFormat::GOLD . TextFormat::BOLD . "- Kit Start -" . TextFormat::RESET . "\n". TextFormat::WHITE ."   tap to give");
$this->particles[] = new FloatingTextParticle(new Vector3(-44.6, 74.7, 129.6), "", TextFormat::GOLD . TextFormat::BOLD . "- Kit Vip -" . TextFormat::RESET . "\n". TextFormat::WHITE ." tap to give");
$this->particles[] = new FloatingTextParticle(new Vector3(-41.5, 74.7, 128.5), "", TextFormat::GOLD . TextFormat::BOLD . "- Kit Premium -" . TextFormat::RESET . "\n". TextFormat::WHITE ."     tap to give");
  $this->getServer()->getScheduler()->scheduleRepeatingTask(new CallbackTask(array($this,"schedule")),20);
         @mkdir($this->getDataFolder());
        @mkdir($this->getDataFolder() . "data/");
}

     public function schedule(){
     foreach($this->getServer()->getOnlinePlayers() as $p){
     $this->playTimer[$p->getPlayer()->getName()] = $this->playTimer[$p->getPlayer()->getName()] + 1;
     if($this->playTimer[$p->getPlayer()->getName()] == 1200){
     $this->giveKit[$p->getPlayer()->getName()] = 1;
     }
         if($this->playTimer[$p->getPlayer()->getName()] == 1500){
     $this->playTimer[$p->getPlayer()->getName()] = 1200;
     }
     }
     }

public function onPlayerJoin(PlayerJoinEvent $event){
  foreach($this->particles as $particle){
   $event->getPlayer()->getLevel()->addParticle($particle, [$event->getPlayer()]);
  }
  $player = $event->getPlayer();
              if(file_exists($this->getDataFolder() . "data/" . strtolower($player->getName() . ".dat"))){
                                       $this->playTimer[$event->getPlayer()->getName()] = 0;
     $this->giveKit[$event->getPlayer()->getName()] = 0;
        } else {
                   $cfg = new Config($this->getDataFolder() . "data/" . strtolower($player->getName() . ".dat"));
        $cfg->save();
        @mkdir($this->getDataFolder() . "data/" . $player->getName() . ".dat");
        $this->playTimer[$event->getPlayer()->getName()] = 0;
     $this->giveKit[$event->getPlayer()->getName()] = 1;
        }
}

Which one is line 60?

Code:

     $this->playTimer[$p->getPlayer()->getName()] = $this->playTimer[$p->getPlayer()->getName()] + 1;

The Player is not set in the array

Should is :

PHP:

$this->playTimer[$p->getName()]++;

do not tell , for some reason the player is not registered in an array ? because it is listed in onJoin

onJoin() is executed after so the player name doesn' t exist in the array

You can detail?

http://forums.pocketmine.net/threads/i-got-a-question-about-the-scheduledelayedtask.7345/

And try to use in_array();

Frankly , it's not very helpful .

http://php.net/manual/en/function.in-array.php