Kazi array_intersect_key

Kazi array_intersect_key inakubali arrays kadhaa na hurudhi array mpya, yenye elementi za array ya kwanza, ambazo funguo zipo katika arrays zingine zote. Kulinganisha hufanyika tu kwa funguo, maadili hayazingatiwi.

Syntax

array_intersect_key(array1, array2, array3, ...);

Mfano

Wacha tulinganishe arrays mbili kwa funguo:

<?php
	$arr1 = ['a' => 1, 'b' => 2, 'c' => 3];
	$arr2 = ['a' => 4, 'c' => 5, 'd' => 6];
	
	$res = array_intersect_key($arr1, $arr2);
	print_r($res);
?>

Matokeo ya utekelezaji wa kodi:

['a' => 1, 'c' => 3]

Mfano

Wacha tulinganishe arrays tatu kwa funguo:

<?php
	$arr1 = [1 => 'a', 2 => 'b', 3 => 'c'];
	$arr2 = [1 => 'd', 3 => 'e'];
	$arr3 = [1 => 'f', 4 => 'g'];
	
	$res = array_intersect_key($arr1, $arr2, $arr3);
	print_r($res);
?>

Matokeo ya utekelezaji wa kodi:

[1 => 'a']

Mfano

Kulinganisha arrays na aina tofauti za funguo:

<?php
	$arr1 = ['1' => 'a', 2 => 'b'];
	$arr2 = [1 => 'c', '2' => 'd'];
	
	$res = array_intersect_key($arr1, $arr2);
	print_r($res);
?>

Matokeo ya utekelezaji wa kodi:

['1' => 'a', 2 => 'b']

Angalia pia

kazi array_intersect,
ambayo inalinganisha arrays kwa maadili
kazi array_diff_key,
ambayo inalinganisha arrays kwa funguo na hurudhi tofauti
kazi array_intersect_assoc,
ambayo inalinganisha na funguo, na maadili