array_uintersect_assoc
(PHP 5, PHP 7, PHP 8)
array_uintersect_assoc — Computes the intersection of arrays with additional index check, compares data by a callback function
Descrizione
Computes the intersection of arrays with additional index check, compares data by a callback function.
Note that the keys are used in the comparison unlike in array_uintersect(). The data is compared by using a callback function.
Elenco dei parametri
-
array -
The first array.
-
arrays -
Arrays to compare against.
-
value_compare_func -
La funzione di confronto deve restituire un intero minore, uguale o maggiore di zero se il primo argomento è considerato essere minore, uguale o maggiore del secondo.
AttenzioneReturning non-integer values from the comparison function, such as float, will result in an internal cast to int of the callback's return value. So values such as
0.99and0.1will both be cast to an integer value of0, which will compare such values as equal.AttenzioneThe sorting callback must handle any value from any array in any order, regardless of the order they were originally provided. This is because each individual array is first sorted before being compared against other arrays. For example:
<?php
$arrayA = ["string", 1];
$arrayB = [["value" => 1]];
// $item1 and $item2 can be any of "string", 1 or ["value" => 1]
$compareFunc = static function ($item1, $item2) {
$value1 = is_string($item1) ? strlen($item1) : (is_array($item1) ? $item1["value"] : $item1);
$value2 = is_string($item2) ? strlen($item2) : (is_array($item2) ? $item2["value"] : $item2);
return $value1 <=> $value2;
};
?>
Valori restituiti
Returns an array containing all the values of
array that are present in all the arguments.
Esempi
Example #1 array_uintersect_assoc() example
<?php
$array1 = array("a" => "green", "b" => "brown", "c" => "blue", "red");
$array2 = array("a" => "GREEN", "B" => "brown", "yellow", "red");
print_r(array_uintersect_assoc($array1, $array2, "strcasecmp"));
?>Il precedente esempio visualizzerà:
Array
(
[a] => green
)
Vedere anche:
- array_uintersect() - Computes the intersection of arrays, compares data by a callback function
- array_intersect_assoc() - Calcola l'intersezione degli array con un ulteriore controllo sugli indici
- array_intersect_uassoc() - Computes the intersection of arrays with additional index check, compares indexes by a callback function
- array_uintersect_uassoc() - Computes the intersection of arrays with additional index check, compares data and indexes by separate callback functions
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