__clone metodi

__clone metodi clone operator ulanylanda awtomatik çagyrylýar. Ol obýektiň öz göçürmek logikasyny kesgitlemäge mümkinçilik berýär. Öňünden PHP obýektiň ähli aýratynlyklarynyň ýokarky göçürmesini ýerine ýetirýär. __clone metodi çuň göçürmek amala aşyrmaly ýa-da klonlanylanda hereketini üýtgetmeli bolan ýerlerde peýdaly.

Sintaksis

public function __clone(): void

Mysal

Obýektiň esas klonlamasyny amala aşyralyň:

<?php
	class User {
		public $name;
		
		public function __construct($name) {
			$this->name = $name;
		}
		
		public function __clone() {
			echo 'Obýekt klonlandy';
		}
	}
	
	$user1 = new User('John');
	$user2 = clone $user1;
?>

Kodyň netijesi:

'Obýekt klonlandy'

Mysal

Içine goýlan obýektleri bolan obýektiň çuň göçürmesini amala aşyralyň:

<?php
	class Address {
		public $city;
		
		public function __construct($city) {
			$this->city = $city;
		}
	}
	
	class User {
		public $name;
		public $address;
		
		public function __construct($name, $city) {
			$this->name = $name;
			$this->address = new Address($city);
		}
		
		public function __clone() {
			$this->address = clone $this->address;
		}
	}
	
	$user1 = new User('John', 'New York');
	$user2 = clone $user1;
	$user2->address->city = 'Boston';
	
	echo $user1->address->city;
?>

Kodyň netijesi:

'New York'

Mysal

Klonlanylanda yzygiderli identifikator goşalyň:

<?php
	class Product {
		public $id;
		public $name;
		
		public function __construct($name) {
			$this->id = uniqid();
			$this->name = $name;
		}
		
		public function __clone() {
			$this->id = uniqid();
		}
	}
	
	$product1 = new Product('Laptop');
	$product2 = clone $product1;
	
	echo $product1->id . ' ' . $product2->id;
?>

Kodyň netijesi (mysal):

'5f1a2b3c 5f1a2b3d'

Şeýle-de görüň

__construct metodi,
obýektiň konstraktory bolýar