Can a developer take a look at my plugin?

I am making a plugin that kicks players from the game when they kill another player. I have the code written but I need someone who knows what they're doing to look at it, and tell me if I messed and where I messed up. If anyone could help me, start a thread with me and i'll give you the code. Thanks

And you are starting a thread asking people to start a thread to ask you while you are the one asking?
Why don't you just put the code here?

Good point. Here's the code:
https://github.com/Blubberboy333/KillBan/blob/master/Code

1. https://github.com/Blubberboy333/KillBan/blob/master/src/bluberboy/main.php#L44 Undefined variable $eventPvP
2. https://github.com/Blubberboy333/KillBan/blob/master/src/bluberboy/main.php#L44 It is EntityDamagedByEntityEvent
3. https://github.com/Blubberboy333/KillBan/blob/master/src/bluberboy/main.php#L65 I think public is implicit, but better add the modifier back.
4. https://github.com/Blubberboy333/KillBan/blob/master/src/bluberboy/main.php#L65 Read the docs at http://jenkins.pocketmine.net/job/PocketMine-MP-Doc/doxygen or the PocketMine source at https://github.com/PocketMine/PocketMine-MP/tree/master/src/pocketmine/event . You can find all the events in these places. It is PlayerDeathEvent.
5. https://github.com/Blubberboy333/KillBan/blob/master/src/bluberboy/main.php#L67 Check $event->getEntity()->getLastDamageCause() instanceof EntityDamageByEntityEvent
6. https://github.com/Blubberboy333/KillBan/blob/master/src/bluberboy/main.php#L71 You are checking the same thing twice?
7. https://github.com/Blubberboy333/KillBan/blob/master/src/bluberboy/main.php#L75 Undefined field OPKilling. Do you know what you are doing?
8. https://github.com/Blubberboy333/KillBan/blob/master/src/bluberboy/main.php#L75 What is !$player == OP?
   1. If you want to check unequal, use $a != $b not !$a == $b
   2. Undefined constant OP
   3. Use $player->isOp() instead
   4. Generally, in plugins, you should check whether the player has a certain permission node rather than whether the player is op.
9. https://github.com/Blubberboy333/KillBan/blob/master/src/bluberboy/main.php#L80 What? Remove? You should use $player->kick() for kicking, and they should not be in a chained call.
10. https://github.com/Blubberboy333/KillBan/blob/master/src/bluberboy/main.php#L81-83 What are these?
    
11. https://github.com/Blubberboy333/KillBan/blob/master/src/bluberboy/main.php#L86 Seems like you have a double indent?

How do you find out if a player has a permission node?

PHP:

Player $player->hasPermission("permission.node");

Example:

PHP:

if($player->hasPermission("hi"){
  $player->sendPopup("HI!");
}