_rest_array_intersect_key_recursive() WP 5.3.0

Recursively computes the intersection of arrays using keys for comparison.

No Hooks.

Return

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

Usage

_rest_array_intersect_key_recursive( $array1, $array2 );

$array1(array) (required)

The array with master keys to check.

$array2(array) (required)

An array to compare keys against.

Changelog

Code of _rest_array_intersect_key_recursive() rest array intersect key recursive ^{WP 5.7.2}

<?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;
}