array_diff_uassoc

(PHP 5)

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

Descrierea

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.

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.

int callback ( mixed $a, mixed $b )

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");.

Vedeți de asemenea

  • 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 a callback functions

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User Contributed Notes 2 notes

up
1
MD. ABU SAYEM
1 month 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
)
up
-2
anton-website at mail dot ru, Anton
2 months ago
Странно в документации почему-то не сказано,
 как выводить callback функцию если она является методом класса?
Ответ: в этом случае вид callback function должен быть
"Class::key_compare_func "
Как на  примере:

    public function arrayDiffUAssoc ($arrOne, $arrTwo, $funcallbac){
        if (is_array($arrOne) && is_array($arrTwo) && !empty($funcallbac))
            return array_diff_uassoc ($arrOne, $arrTwo, __CLASS__'::'.$funcallbac);
        else
            return 'Ошибка в '.__METHOD__.': Аргументы должны быть массивами и существовать callbac function';
    }
   
    public function key_compare_func ($a, $b) {
       if ($a === $b)
        {
           return 0;
       }
 
       return ($a>$b) ? 1 : -1;
   }
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