1--TEST-- 2Test array_multisort() function : usage variation - test sort order of all types 3--FILE-- 4<?php 5/* Prototype : bool array_multisort(array ar1 [, SORT_ASC|SORT_DESC [, SORT_REGULAR|SORT_NUMERIC|SORT_STRING|SORT_NATURAL|SORT_FLAG_CASE]] [, array ar2 [, SORT_ASC|SORT_DESC [, SORT_REGULAR|SORT_NUMERIC|SORT_STRING|SORT_NATURAL|SORT_FLAG_CASE]], ...]) 6 * Description: Sort multiple arrays at once similar to how ORDER BY clause works in SQL 7 * Source code: ext/standard/array.c 8 * Alias to functions: 9 */ 10 11echo "*** Testing array_multisort() : usage variation - test sort order of all types***\n"; 12 13// Define error handler 14function test_error_handler($err_no, $err_msg, $filename, $linenum, $vars) { 15 // We're testing sort order not errors so ignore. 16} 17set_error_handler('test_error_handler'); 18 19// define some classes 20class classWithToString { 21 public function __toString() { 22 return "Class A object"; 23 } 24} 25 26class classWithoutToString { } 27 28$inputs = array( 29 'int 0' => 0, 30 'float -10.5' => -10.5, 31 array(), 32 'uppercase NULL' => NULL, 33 'lowercase true' => true, 34 'empty string DQ' => "", 35 'string DQ' => "string", 36 'instance of classWithToString' => new classWithToString(), 37 'undefined var' => @$undefined_var, 38); 39 40var_dump(array_multisort($inputs, SORT_STRING)); 41var_dump($inputs); 42 43?> 44===DONE=== 45--EXPECT-- 46*** Testing array_multisort() : usage variation - test sort order of all types*** 47bool(true) 48array(9) { 49 ["uppercase NULL"]=> 50 NULL 51 ["empty string DQ"]=> 52 string(0) "" 53 ["undefined var"]=> 54 NULL 55 ["float -10.5"]=> 56 float(-10.5) 57 ["int 0"]=> 58 int(0) 59 ["lowercase true"]=> 60 bool(true) 61 [0]=> 62 array(0) { 63 } 64 ["instance of classWithToString"]=> 65 object(classWithToString)#1 (0) { 66 } 67 ["string DQ"]=> 68 string(6) "string" 69} 70===DONE=== 71