array_diff_keyarray_diff_uassoc
(PHP 5)
array_diff_uassoc — Computes the difference of arrays with additional index check which is performed by a user supplied callback function
설명
Compares array1 against array2 and returns the difference. Unlike array_diff() the array keys are used in the comparison.
Unlike array_diff_assoc() an user supplied callback function is used for the indices comparison, not internal function.
인수
- array1
-
The array to compare from
- array2
-
An array to compare against
- ...
-
More arrays to compare against
- key_compare_func
-
callback function to use. The callback function must return an integer less than, equal to, or greater than zero if the first argument is considered to be respectively less than, equal to, or greater than the second.
반환값
Returns an array containing all the entries from array1 that are not present in any of the other arrays.
예제
Example #1 array_diff_uassoc() example
The "a" => "green" pair is present in both arrays and thus it is not in the output from the function. Unlike this, the pair 0 => "red" is in the output because in the second argument "red" has key which is 1.
<?php
function key_compare_func($a, $b)
{
if ($a === $b) {
return 0;
}
return ($a > $b)? 1:-1;
}
$array1 = array("a" => "green", "b" => "brown", "c" => "blue", "red");
$array2 = array("a" => "green", "yellow", "red");
$result = array_diff_uassoc($array1, $array2, "key_compare_func");
print_r($result);
?>
위 예제의 출력:
Array
(
[b] => brown
[c] => blue
[0] => red
)
The equality of 2 indices is checked by the user supplied callback function.
주의
Note: This function only checks one dimension of a n-dimensional array. Of course you can check deeper dimensions by using, for example, array_diff_uassoc($array1[0], $array2[0], "key_compare_func");.
참고
- array_diff() - 배열 차이를 계산
- array_diff_assoc() - 추가적인 인덱스 확인과 함께 배열 차이를 계산
- array_udiff() - Computes the difference of arrays by using a callback function for data comparison
- 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_intersect() - 배열의 교집합을 계산
- array_intersect_assoc() - 인덱스 검사과 함께 배열의 교집합을 계산
- array_uintersect() - Computes the intersection of arrays, compares data by a callback function
- array_uintersect_assoc() - Computes the intersection of arrays with additional index check, compares data by a callback function
- array_uintersect_uassoc() - Computes the intersection of arrays with additional index check, compares data and indexes by a callback functions
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User Contributed Notes
array_diff_uassoc