PHP Array_intersect_assoc ()

Definition and usage

The ARRAY_INTERSECT_ASSOC () function returns an array of intersections of two or more arrays.

Unlike the Array_intersect () function, this function compares key names in addition to the key values. The key name of the element in the returned array remains unchanged.

Grammar

Array_intersect_assoc (Array1,array2,array3 ...)

Parameters	Describe
Array1	Necessary. The first array to compare with the other array.
Array2	Necessary. The array to compare with the first array.
Array3	Optional. The array to compare with the first array. Can have more than one.

Example 1

<?php$a1 = Array (0=> "cat",1=> "dog",2=> "Horse"), $a 2 = Array (3=> "Horse",1=> "dog",0=> "cat"); Print_r (ARRAY_INTERSECT_ASSOC ($a 1, $a 2));? >

Output:

Array ([0] = Cat [1] = Dog)

Example 2

<?php$a1 = Array (0=> "Cat",1=> "dog",2=> "Horse"), $a 2 = Array (3=> "Horse",1=> "dog",5=> "Fish"); $a 3 = Array (6=> "Cow",1=> "Dog",8=> "Fish");p Rint_r (ARRAY_INTERSECT_ASSOC ($a 1, $a 2, $a 3)); >

Output:

Array ([1] = Dog)

　　

PHP Array_intersect_assoc ()