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:

array_intersect() - Calcola l'intersezione degli arrays
array_intersect_assoc() - Calcola l'intersezione degli array con un ulteriore controllo sugli indici
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
array_intersect_key() - Computes the intersection of arrays using keys for comparison
array_intersect_ukey() - Computes the intersection of arrays using a callback function on the keys for comparison