array_diff_uassoc

(PHP 5, PHP 7)

array_diff_uassocComputes the difference of arrays with additional index check which is performed by a user supplied callback function

설명

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

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

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 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() - 데이터 비교 콜백함수를 사용하여 배열간의 차이를 계산
  • 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 separate callback functions

add a note add a note

User Contributed Notes 1 note

up
5
MD. ABU SAYEM
5 years ago
//array_diff_uassoc for multidimenssional array
$color_1=array('a'=>'white','b'=>'red','c'=>array('a'=>'green','b'=>'blue','c'=>'yellow'));
$color_2=array('a'=>'white','b'=>'red','c'=>array('a'=>'white','b'=>'red','c'=>'yellow'));

function key_compare($a,$b){
    if($a===$b)        return 0;
    return($a>$b)?1:-1;
}
print_r(array_diff_uassoc($color_1['c'], $color_2['c'],"key_compare"));

//Output
Array
(
    [a] => green
    [b] => blue
)
To Top