PMMP plugin script that clears inventories on player quit for UHC

InvClear.php

<?php
/**
 * @name InvClear
 * @main jasonwynn10\InvClear\MainClass
 * @version 0.1.0
 * @api 3.0.0-ALPHA5
 * @description A plugin script that clears inventories on player quit for UHC
 * @author jasonwynn10
 */
namespace jasonwynn10\InvClear{
	use pocketmine\event\Listener;
	use pocketmine\event\PlayerQuitEvent;
	use pocketmine\plugin\PluginBase;
	class MainClass extends PluginBase implements Listener {
		public function onEnable() {
			$this->getServer()->getPluginManager()->registerEvents($this, $this);
		}
		public function onQuit(PlayerQuitEvent $ev) {
			for($i = 0; $i <= $ev->getPlayer()->getInventory()->getSize(); $i++) {
				$ev->getPlayer()->getInventory()->clear($i);
			}
		}
	}
}