How To Get Item On Player's Inventory

Hi, I Want To Check If The Player Has An Items That Required By The Plugin

Example :
The Plugin Need 2 Feathers , Then The Plugin Check The Player's Inventory, If True Then The Plugins Will Take 2 Feathers From The Player's Inventory

One More, Is It Possible To Check An Items With Name From The Player's Inventory?
Example :
I Want To Check If The Players Have 2 Feathers Named "BirdFeather" , Then The PLugin Take The 2 Feathers Named "BirdFeather"

Im Sorry For My Bad English

 

PHP:

$player = $event->getPlayer(); // Use this if you're using an event
$inventory = $player->getInventory();
if($inventory->contains(Item::get(288, 0, 2))) {
    $inventory->removeItem(Item::get(288, 0, 2));
}


 

Thanks

 

but, How To Check If The Item Had A Custom Name ? Coz, I Only Want To Take An Item WIth A Custom Name

 

Anvils are not added to PocketMine yet (they are, but you cannot use them).

I don't know any way to do that.
I tried adding a new item called "Bird Feather" also as a feather item, but it won't work.

 

What event

 

PHP:

$player = $event->getPlayer(); // Use this if you're using an event
$inventory = $player->getInventory();
$item = Item::get(288, 0, 2);

if($inventory->contains($item) and $item->getName() === "BirdFeather") {
    $inventory->removeItem(Item::get(288, 0, 2));
}

and to set custom item name use

PHP:

/* @var $item = Item */

$item->setCustomName("BirdFeather");