--TEST-- Test array_reverse() function : usage variations - assoc. array with diff. keys for 'array' argument --FILE-- "0"), array(1 => "1"), array(1 => "1", 2 => "2", 3 => "3", 4 => "4"), // arrays with float keys /*5*/ array(2.3333 => "float"), array(1.2 => "f1", 3.33 => "f2", 4.89999922839999 => "f3", 33333333.333333 => "f4"), // arrays with string keys array("\tHello" => 111, "re\td" => "color", "\v\fworld" => 2.2, "pen\n" => 33), /*8*/ array("\tHello" => 111, "re\td" => "color", "\v\fworld" => 2.2, "pen\n" => 33), array("hello", $heredoc => "string"), // heredoc // array with object, unset variable and resource variable array(new classA() => 11, @$unset_var => "hello", $fp => 'resource'), // array with mixed values /*11*/ array('hello' => 1, new classA() => 2, "fruit" => 2.2, $fp => 'resource', 133 => "int", 444.432 => "float", @$unset_var => "unset", $heredoc => "heredoc") ); // loop through the various elements of $arrays to test array_reverse() $iterator = 1; foreach($arrays as $array) { echo "-- Iteration $iterator --\n"; // with default argument echo "- default argument -\n"; var_dump( array_reverse($array) ); // with $preserve_keys argument echo "- \$preserve keys = true -\n"; var_dump( array_reverse($array, true) ); echo "- \$preserve_keys = false -\n"; var_dump( array_reverse($array, false) ); $iterator++; }; // close the file resource used fclose($fp); echo "Done"; ?> --EXPECTF-- *** Testing array_reverse() : usage variations *** Warning: Illegal offset type in %s on line %d Warning: Illegal offset type in %s on line %d Warning: Illegal offset type in %s on line %d Warning: Illegal offset type in %s on line %d -- Iteration 1 -- - default argument - array(0) { } - $preserve keys = true - array(0) { } - $preserve_keys = false - array(0) { } -- Iteration 2 -- - default argument - array(1) { [0]=> string(1) "0" } - $preserve keys = true - array(1) { [0]=> string(1) "0" } - $preserve_keys = false - array(1) { [0]=> string(1) "0" } -- Iteration 3 -- - default argument - array(1) { [0]=> string(1) "1" } - $preserve keys = true - array(1) { [1]=> string(1) "1" } - $preserve_keys = false - array(1) { [0]=> string(1) "1" } -- Iteration 4 -- - default argument - array(4) { [0]=> string(1) "4" [1]=> string(1) "3" [2]=> string(1) "2" [3]=> string(1) "1" } - $preserve keys = true - array(4) { [4]=> string(1) "4" [3]=> string(1) "3" [2]=> string(1) "2" [1]=> string(1) "1" } - $preserve_keys = false - array(4) { [0]=> string(1) "4" [1]=> string(1) "3" [2]=> string(1) "2" [3]=> string(1) "1" } -- Iteration 5 -- - default argument - array(1) { [0]=> string(5) "float" } - $preserve keys = true - array(1) { [2]=> string(5) "float" } - $preserve_keys = false - array(1) { [0]=> string(5) "float" } -- Iteration 6 -- - default argument - array(4) { [0]=> string(2) "f4" [1]=> string(2) "f3" [2]=> string(2) "f2" [3]=> string(2) "f1" } - $preserve keys = true - array(4) { [33333333]=> string(2) "f4" [4]=> string(2) "f3" [3]=> string(2) "f2" [1]=> string(2) "f1" } - $preserve_keys = false - array(4) { [0]=> string(2) "f4" [1]=> string(2) "f3" [2]=> string(2) "f2" [3]=> string(2) "f1" } -- Iteration 7 -- - default argument - array(4) { ["pen "]=> int(33) [" world"]=> float(2.2) ["re d"]=> string(5) "color" [" Hello"]=> int(111) } - $preserve keys = true - array(4) { ["pen "]=> int(33) [" world"]=> float(2.2) ["re d"]=> string(5) "color" [" Hello"]=> int(111) } - $preserve_keys = false - array(4) { ["pen "]=> int(33) [" world"]=> float(2.2) ["re d"]=> string(5) "color" [" Hello"]=> int(111) } -- Iteration 8 -- - default argument - array(4) { ["pen "]=> int(33) [" world"]=> float(2.2) ["re d"]=> string(5) "color" [" Hello"]=> int(111) } - $preserve keys = true - array(4) { ["pen "]=> int(33) [" world"]=> float(2.2) ["re d"]=> string(5) "color" [" Hello"]=> int(111) } - $preserve_keys = false - array(4) { ["pen "]=> int(33) [" world"]=> float(2.2) ["re d"]=> string(5) "color" [" Hello"]=> int(111) } -- Iteration 9 -- - default argument - array(2) { ["Hello world"]=> string(6) "string" [0]=> string(5) "hello" } - $preserve keys = true - array(2) { ["Hello world"]=> string(6) "string" [0]=> string(5) "hello" } - $preserve_keys = false - array(2) { ["Hello world"]=> string(6) "string" [0]=> string(5) "hello" } -- Iteration 10 -- - default argument - array(1) { [""]=> string(5) "hello" } - $preserve keys = true - array(1) { [""]=> string(5) "hello" } - $preserve_keys = false - array(1) { [""]=> string(5) "hello" } -- Iteration 11 -- - default argument - array(6) { ["Hello world"]=> string(7) "heredoc" [""]=> string(5) "unset" [0]=> string(5) "float" [1]=> string(3) "int" ["fruit"]=> float(2.2) ["hello"]=> int(1) } - $preserve keys = true - array(6) { ["Hello world"]=> string(7) "heredoc" [""]=> string(5) "unset" [444]=> string(5) "float" [133]=> string(3) "int" ["fruit"]=> float(2.2) ["hello"]=> int(1) } - $preserve_keys = false - array(6) { ["Hello world"]=> string(7) "heredoc" [""]=> string(5) "unset" [0]=> string(5) "float" [1]=> string(3) "int" ["fruit"]=> float(2.2) ["hello"]=> int(1) } Done