배열 함수 목록
PHP Manual

array_intersect_ukey

(PHP 5 >= 5.1.0, PHP 7)

array_intersect_ukeyComputes the intersection of arrays using a callback function on the keys for comparison

설명

array array_intersect_ukey ( array $array1 , array $array2 [, array $... ], callable $key_compare_func )

array_intersect_ukey() returns an array containing all the values of array1 which have matching keys that are present in all the arguments.

인수

array1

Initial array for comparison of the arrays.

array2

First array to compare keys against.

...

Variable list of array arguments to compare keys against.

key_compare_func

이 비교 함수는 첫번째 인수가 두번째 인수보다 작거나, 같거나, 클 경우에 각각 0보다 작거나, 같거나, 큰 정수를 반환해야 합니다.

int callback ( mixed $a, mixed $b )

반환값

Returns the values of array1 whose keys exist in all the arguments.

예제

Example #1 array_intersect_ukey() example

<?php
function key_compare_func($key1$key2)
{
    if (
$key1 == $key2)
        return 
0;
    else if (
$key1 $key2)
        return 
1;
    else
        return -
1;
}

$array1 = array('blue'  => 1'red'  => 2'green'  => 3'purple' => 4);
$array2 = array('green' => 5'blue' => 6'yellow' => 7'cyan'   => 8);

var_dump(array_intersect_ukey($array1$array2'key_compare_func'));
?>

위 예제의 출력:

array(2) {
  ["blue"]=>
  int(1)
  ["green"]=>
  int(3)
}

In our example you see that only the keys 'blue' and 'green' are present in both arrays and thus returned. Also notice that the values for the keys 'blue' and 'green' differ between the two arrays. A match still occurs because only the keys are checked. The values returned are those of array1.

참고


배열 함수 목록
PHP Manual