(PHP 5)
array_uintersect_uassoc — Computes the intersection of arrays with additional index check, compares data and indexes by a callback functions
$array1
   , array $array2
   [, array $...
   ], callable $value_compare_func
   , callable $key_compare_func
   )Computes the intersection of arrays with additional index check, compares data and indexes by a callback functions Note that the keys are used in the comparison unlike in array_uintersect(). Both the data and the indexes are compared by using separate callback functions.
array1The first array.
array2The second array.
value_compare_funcLa 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.
key_compare_funcKey comparison callback function.
   Returns an array containing all the values of
   array1 that are present in all the arguments.
  
Example #1 array_uintersect_uassoc() example
<?php
$array1 = array("a" => "green", "b" => "brown", "c" => "blue", "red");
$array2 = array("a" => "GREEN", "B" => "brown", "yellow", "red");
print_r(array_uintersect_uassoc($array1, $array2, "strcasecmp", "strcasecmp"));
?>
Il precedente esempio visualizzerà:
Array
(
    [a] => green
    [b] => brown
)