Computes the difference of arrays with additional index check, compares data and indexes by a callback function

# array_udiff_uassoc

(PHP 5, PHP 7)

array_udiff_uassoc — Computes the difference of arrays with additional index check, compares data and indexes by a callback function

### Descrierea

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

Computes the difference of arrays with additional index check, compares data and indexes by a callback function.

Note that the keys are used in the comparison unlike array_diff() and array_udiff().

### Parametri

`array1`

  The first array.

`array2`

  The second array.

`value_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
`key_compare_func`

  The comparison of keys (indices) is done also by the callback function `key_compare_func`. This behaviour is unlike what array_udiff_assoc() does, since the latter compares the indices by using an internal function.

### Valorile întoarse

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

### Exemple

Example #1 array_udiff_uassoc() example

`<?php
class cr {
private $priv_member;
function cr($val)
{
$this->priv_member = $val;
}
static function comp_func_cr($a, $b)
{
if ($a->priv_member === $b->priv_member) return 0;
return ($a->priv_member > $b->priv_member)? 1:-1;
}
static function comp_func_key($a, $b)
{
if ($a === $b) return 0;
return ($a > $b)? 1:-1;
}
}
$a = array("0.1" => new cr(9), "0.5" => new cr(12), 0 => new cr(23), 1=> new cr(4), 2 => new cr(-15),);
$b = array("0.2" => new cr(9), "0.5" => new cr(22), 0 => new cr(3), 1=> new cr(4), 2 => new cr(-15),);
$result = array_udiff_uassoc($a, $b, array("cr", "comp_func_cr"), array("cr", "comp_func_key"));
print_r($result);
?>`

Exemplul de mai sus va afișa:

    Array
    (
        [0.1] => cr Object
            (
                [priv_member:private] => 9
            )

        [0.5] => cr Object
            (
                [priv_member:private] => 12
            )

        [0] => cr Object
            (
                [priv_member:private] => 23
            )
    )

In our example above you see the "1" => new cr(4) pair is present in both arrays and thus it is not in the output from the function. Keep in mind that you have to supply 2 callback functions.

### Note

> Notă: Please note that this function only checks one dimension of a n-dimensional array. Of course you can check deeper dimensions by using, for example, array_udiff_uassoc($array1[0], $array2[0], "data_compare_func", "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_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