[edit] Last updated: Fri, 23 Mar 2012

array_udiff_uassoc

(PHP 5)

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

Opis

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

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().

Parametry

array1: The first array.
array2: The second array.
data_compare_func: The comparison 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.

int callback ( mixed $a, mixed $b )
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.

Zwracane wartości

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

Przykłady

Przykład #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);
?>

Powyższy przykład wyświetli:

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.

Notatki

Informacja: 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");.

Zobacz też:

array_diff() - Zwraca różnice pomiędzy tablicami
array_diff_assoc() - Oblicza różnicę między tablicami z dodatkowym sprawdzaniem kluczy
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() - Zwraca przecięcie tablic
array_intersect_assoc() - Wylicza przecięcie tablic z dodatkowym sprawdzaniem indeksów
array_uintersect() - Computes the intersection of arrays, compares data by a callback function
array_uintersect_assoc() - Oblicza przecięcie tablic z dodatkowym sprawdzaniem indeksów, porównując dane przez funkcję zwrotną
array_uintersect_uassoc() - Computes the intersection of arrays with additional index check, compares data and indexes by a callback functions

add a note User Contributed Notes array_udiff_uassoc

aidan at php dot net 28-May-2004 10:06


This functionality is now implemented in the PEAR package PHP_Compat.



More information about using this function without upgrading your version of PHP can be found on the below link:



http://pear.php.net/package/PHP_Compat

add a note