_rest_array_intersect_key_recursive( array $array1, array $array2 )

Recursively computes the intersection of arrays using keys for comparison.

Parameters Parameters


(array) (Required) The array with master keys to check.


(array) (Required) An array to compare keys against.

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Return Return

(array) An associative array containing all the entries of array1 which have keys that are present in all arguments.

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Source Source

File: wp-includes/rest-api.php

function _rest_array_intersect_key_recursive( $array1, $array2 ) {
	$array1 = array_intersect_key( $array1, $array2 );
	foreach ( $array1 as $key => $value ) {
		if ( is_array( $value ) && is_array( $array2[ $key ] ) ) {
			$array1[ $key ] = _rest_array_intersect_key_recursive( $value, $array2[ $key ] );
	return $array1;

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Changelog Changelog

Version Description
5.3.0 Introduced.

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