Php/docs/function.array-intersect-uassoc

• PHP Manual
• Array Functions
• Computes the intersection of arrays with additional index check, compares indexes by a callback function

array_intersect_uassoc

(PHP 5, PHP 7)

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

Description

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().

Parameters

array

Initial array for comparison of the arrays.

arrays

Arrays to compare keys against.

key_compare_func

The comparison function must return an integer less than, equal to, or greater than zero if the first argument is considered to be respectively less than, equal to, or greater than the second.

callback ( mixed $a, mixed $b ) : int

Return Values

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

Examples

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"));?>

The above example will output:

Array
(
    [b] => brown
)

See Also

• array_intersect() - Computes the intersection of arrays
• array_intersect_assoc() - Computes the intersection of arrays with additional index check
• 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