PHP Array function sequence Array_intersect () returns an array of two or more arrays _php tutorial

array_intersect () Definition and usage

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

The result array contains all of the values in the array that are being compared and also in all other parameter arrays, with the key names remaining unchanged.

Note: Only values are used for comparisons.

Grammar
Array_intersect (Array1,array2,array3 ...)

Parameters	Description
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
Copy CodeThe code is as follows:
$a 1=array (0=> "Cat",1=> "Dog",2=> "Horse");
$a 2=array (3=> "Horse",4=> "Dog",5=> "Fish");
Print_r (Array_intersect ($a 1, $a 2));
?>

Output:

Array ([1] = Dog [2] = Horse)

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