1--TEST-- 2Test array_change_key_case() function : usage variations - referenced variables 3--FILE-- 4<?php 5/* Prototype : array array_change_key_case(array $input [, int $case]) 6 * Description: Retuns an array with all string keys lowercased [or uppercased] 7 * Source code: ext/standard/array.c 8 */ 9 10/* 11 * Test array_change_key_case() when: 12 * 1. Passed a referenced variable 13 * 2. Passed an argument by reference 14 */ 15 16echo "*** Testing array_change_key_case() : usage variations ***\n"; 17 18$input = array('one' => 1, 'two' => 2, 'ABC' => 'xyz'); 19 20echo "\n-- \$input argument is a reference to array --\n"; 21$new_input = &$input; 22echo "Result:\n"; 23var_dump(array_change_key_case($new_input, CASE_UPPER)); 24echo "Original:\n"; 25var_dump($input); 26echo "Referenced:\n"; 27var_dump($new_input); 28 29echo "Done"; 30?> 31--EXPECTF-- 32*** Testing array_change_key_case() : usage variations *** 33 34-- $input argument is a reference to array -- 35Result: 36array(3) { 37 ["ONE"]=> 38 int(1) 39 ["TWO"]=> 40 int(2) 41 ["ABC"]=> 42 string(3) "xyz" 43} 44Original: 45array(3) { 46 ["one"]=> 47 int(1) 48 ["two"]=> 49 int(2) 50 ["ABC"]=> 51 string(3) "xyz" 52} 53Referenced: 54array(3) { 55 ["one"]=> 56 int(1) 57 ["two"]=> 58 int(2) 59 ["ABC"]=> 60 string(3) "xyz" 61} 62Done 63