array_intersect_uassoc
array_intersect
배열 함수 목록
PHP Manual

# array_intersect_ukey

(PHP 5 >= 5.1.0)

array_intersect_ukey — Computes the intersection of arrays using a callback function on the keys for comparison

### 설명

array array_intersect_ukey ( array `$array1` , array `$array2` [, array `$...` ], callback `$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.

This comparison is done by a user supplied callback function. It must return an integer less than, equal to, or greater than zero if the first key is considered to be respectively less than, equal to, or greater than the second.

### 인수

`array1`

  Initial array for comparison of the arrays.

`array2`

  First array to compare keys against.

`array`

  Variable list of array arguments to compare keys against.

`key_compare_func`

  User supplied callback function to do the comparison.

### 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

- array_diff() - 배열 차이를 계산
- array_udiff() - Computes the difference of arrays by using a callback function for data comparison
- array_diff_assoc() - 추가적인 인덱스 확인과 함께 배열 차이를 계산
- array_diff_uassoc() - Computes the difference of arrays with additional index check which is performed by a user supplied callback function
- array_udiff_assoc() - Computes the difference of arrays with additional index check, compares data by a callback function
- array_udiff_uassoc() - Computes the difference of arrays with additional index check, compares data and indexes by a callback function
- array_diff_key() - Computes the difference of arrays using keys for comparison
- array_diff_ukey() - Computes the difference of arrays using a callback function on the keys for comparison
- array_intersect() - 배열의 교집합을 계산
- array_intersect_assoc() - 인덱스 검사과 함께 배열의 교집합을 계산
- array_intersect_uassoc() - Computes the intersection of arrays with additional index check, compares indexes by a callback function
- array_intersect_key() - Computes the intersection of arrays using keys for comparison

array_intersect_uassoc
array_intersect
배열 함수 목록
PHP Manual