php man page for array_uintersect

ARRAY_UINTERSECT(3)							 1						       ARRAY_UINTERSECT(3)

array_uintersect - Computes the intersection of arrays, compares data by a callback function

SYNOPSIS
       array array_uintersect (array  $array1, array  $array2, [array  $...], callable	$value_compare_func)

DESCRIPTION
	Computes the intersection of arrays, compares data by a callback function.

PARAMETERS
	      o $array1
		- The first array.

	      o $array2
		- The second array.

	      o $value_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.
		int callback (mixed  $a, mixed	$b)

RETURN VALUES
	Returns an array containing all the values of $array1 that are present in all the arguments.

EXAMPLES
       Example #1

	      array_uintersect(3) example

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

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

	      The above example will output:

	      Array
	      (
		  [a] => green
		  [b] => brown
		  [0] => red
	      )

SEE ALSO
       array_intersect(3), array_intersect_assoc(3), array_uintersect_assoc(3), array_uintersect_uassoc(3).

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