1--TEST-- 2Test array_diff_ukey() function : usage variation - Passing boolean indexed array 3--FILE-- 4<?php 5/* Prototype : array array_diff_ukey(array arr1, array arr2 [, array ...], callback key_comp_func) 6 * Description: Returns the entries of arr1 that have keys which are not present in any of the others arguments. 7 * Source code: ext/standard/array.c 8 */ 9 10echo "*** Testing array_diff_ukey() : usage variation ***\n"; 11 12// Initialise function arguments not being substituted (if any) 13$input_array = array(0 => '0', 1 => '1', -10 => '-10', 'true' => 1, 'false' => 0); 14$boolean_indx_array = array(true => 'boolt', false => 'boolf', TRUE => 'boolT', FALSE => 'boolF'); 15 16function key_compare_func($key1, $key2) 17{ 18 return strcasecmp($key1, $key2); 19} 20 21echo "\n-- Testing array_diff_ukey() function with boolean indexed array --\n"; 22 23var_dump( array_diff_ukey($boolean_indx_array, $input_array, 'key_compare_func') ); 24var_dump( array_diff_ukey($input_array, $boolean_indx_array, 'key_compare_func') ); 25 26?> 27===DONE=== 28--EXPECTF-- 29*** Testing array_diff_ukey() : usage variation *** 30 31-- Testing array_diff_ukey() function with boolean indexed array -- 32array(0) { 33} 34array(3) { 35 [-10]=> 36 string(3) "-10" 37 ["true"]=> 38 int(1) 39 ["false"]=> 40 int(0) 41} 42===DONE=== 43