<?php
/* Prototype  : array array_intersect_key(array arr1, array arr2 [, array ...])
 * Description: Returns the entries of arr1 that have keys which are present in all the other arguments. 
 * Source code: ext/standard/array.c
 */

echo "*** Testing array_intersect_key() : usage variation ***\n";

// Initialise function arguments not being substituted (if any)
$input_array = array(0 => '0', 1 => '1' , -10 => '-10'); 
$boolean_indx_array = array(true => 'boolt', false => 'boolf', TRUE => 'boolT', FALSE => 'boolF');

echo "\n-- Testing array_intersect_key() function with boolean indexed array --\n";
var_dump( array_intersect_key($input_array, $boolean_indx_array) );
var_dump( array_intersect_key($boolean_indx_array,$input_array ) );
?>
===DONE===
