is_a funksiyasi

is_a funksiyasi ob'ekt va klass nomini qabul qilib, agar ob'ekt ushbu klassning namunasi yoki uning vorisi bo'lsa, true qiymatini qaytaradi. Uchinchi parametr orqali merosni hisobga olish kerakligini ko'rsatish mumkin (standart true).

Sintaksis

is_a(object, class_name, allow_string = true);

Misol

Keling, ob'ektning stdClass klassiga tegishli ekanligini tekshiramiz:

<?php
	$obj = new stdClass();
	var_dump(is_a($obj, 'stdClass'));
?>

Kodni bajarish natijasi:

true

Misol

Keling, klasslarning meros olishini tekshiramiz:

<?php
	class ParentClass {}
	class ChildClass extends ParentClass {}
	
	$child = new ChildClass();
	var_dump(is_a($child, 'ParentClass'));
?>

Kodni bajarish natijasi:

true

Misol

Keling, interfeyslar bilan ishlashni tekshiramiz:

<?php
	interface MyInterface {}
	class MyClass implements MyInterface {}
	
	$obj = new MyClass();
	var_dump(is_a($obj, 'MyInterface'));
?>

Kodni bajarish natijasi:

true

Shuningdek qarang

is_subclass_of funksiyasi,
meros olishni tekshiradi
instanceof funksiyasi,
namuna tekshiruv operatori
get_class funksiyasi,
ob'ekt klassini qaytaradi
class_implements funksiyasi,
klass interfeyslarini qaytaradi