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    array_intersect_uassoc

    (PHP 5, PHP 7, PHP 8)

    array_intersect_uassoc — Computes the intersection of arrays with additional index check, compares indexes by a callback function

    Descrizione

    array_intersect_uassoc(array $array, array ...$arrays, callable $key_compare_func): array

    array_intersect_uassoc() returns an array containing all the values of array that are present in all the arguments. Note that the keys are used in the comparison unlike in array_intersect().

    Elenco dei parametri

    array

    Initial array for comparison of the arrays.

    arrays

    Arrays to compare keys against.

    key_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.

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

    Returning 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 0.99 and 0.1 will both be cast to an integer value of 0, which will compare such values as equal.

    Valori restituiti

    Returns the values of array whose values exist in all of the arguments.

    Esempi

    Example #1 array_intersect_uassoc() example

    <?php
    $array1     = array("a" => "green", "b" => "brown", "c" => "blue", "red");
    $array2 = array("a" => "GREEN", "B" => "brown", "yellow", "red");

    print_r(array_intersect_uassoc($array1, $array2, "strcasecmp"));
    ?>

    Il precedente esempio visualizzerà:

    Array
(
    [b] => brown
)

    Vedere anche:

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