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1.1 misho 1: --TEST-- 2: Test array_diff_key() function : usage variation - Passing boolean indexed array 3: --FILE-- 4: <?php 5: /* Prototype : array array_diff_key(array arr1, array arr2 [, array ...]) 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: 10: echo "*** Testing array_diff_key() : 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: $boolean_indx_array = array(true => 'boolt', false => 'boolf', TRUE => 'boolT', FALSE => 'boolF'); 15: 16: echo "\n-- Testing array_diff_key() function with boolean indexed array --\n"; 17: // loop through each element of the array for arr1 18: var_dump( array_diff_key($input_array, $boolean_indx_array) ); 19: var_dump( array_diff_key($boolean_indx_array, $input_array) ); 20: ?> 21: ===DONE=== 22: --EXPECTF-- 23: *** Testing array_diff_key() : usage variation *** 24: 25: -- Testing array_diff_key() function with boolean indexed array -- 26: array(3) { 27: [-10]=> 28: string(3) "-10" 29: ["true"]=> 30: int(1) 31: ["false"]=> 32: int(0) 33: } 34: array(0) { 35: } 36: ===DONE===