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

# array_diff_uassoc

(PHP 5, PHP 7)

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

### Descrierea

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

Compares `array1` against `array2` and returns the difference. Unlike array_diff() the array keys are used in the comparison.

Unlike array_diff_assoc() a user supplied callback function is used for the indices comparison, not internal function.

### Parametri

`array1`

  The array to compare from

`array2`

  An array to compare against

`...`

  More arrays to compare against

`key_compare_func`

  Funcția de comparare trebuie să întoarcă un întreg mai mic, egal cu sau mai mare decât zero dacă primul argument este considerat respectiv mai mic, egal cu sau mai mare decât al doilea argument.

  callback ( mixed `$a`, mixed `$b` ) : int

### Valorile întoarse

Returns an array containing all the entries from `array1` that are not present in any of the other arrays.

### Exemple

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);
?>`

Exemplul de mai sus va afișa:

    Array
    (
        [b] => brown
        [c] => blue
        [0] => red
    )

The equality of 2 indices is checked by the user supplied callback function.

### Note

> Notă:

> 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");.

### A se vedea și

- array_diff() - Calculează diferența dintre tablouri
- array_diff_assoc() - Computes the difference of arrays with additional index check
- 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() - Computes the intersection of arrays
- array_intersect_assoc() - Computes the intersection of arrays with additional index check
- 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