1--TEST-- 2Test array_diff_ukey() function : usage variation - Passing boolean indexed array 3--FILE-- 4<?php 5echo "*** Testing array_diff_ukey() : usage variation ***\n"; 6 7// Initialise function arguments not being substituted (if any) 8$input_array = array(0 => '0', 1 => '1', -10 => '-10', 'true' => 1, 'false' => 0); 9$boolean_indx_array = array(true => 'boolt', false => 'boolf', TRUE => 'boolT', FALSE => 'boolF'); 10 11function key_compare_func($key1, $key2) 12{ 13 return strcasecmp($key1, $key2); 14} 15 16echo "\n-- Testing array_diff_ukey() function with boolean indexed array --\n"; 17 18var_dump( array_diff_ukey($boolean_indx_array, $input_array, 'key_compare_func') ); 19var_dump( array_diff_ukey($input_array, $boolean_indx_array, 'key_compare_func') ); 20 21?> 22--EXPECT-- 23*** Testing array_diff_ukey() : usage variation *** 24 25-- Testing array_diff_ukey() function with boolean indexed array -- 26array(0) { 27} 28array(3) { 29 [-10]=> 30 string(3) "-10" 31 ["true"]=> 32 int(1) 33 ["false"]=> 34 int(0) 35} 36