note 112722 added to function.array-walk

Some speed tests <?php // Test results $array1 = test('array_walk'); $array2 = test('array_walk_list_each'); $array3 = test('array_walk_foreach1'); $array4 = test('array_walk_foreach2'); // Check arrays for equal var_dump($array1 == $array2, $array1 == $array3, $array1 == $array4); // Test function 1 function array_walk_list_each(&$array, $function, $userData = null) { while ( list($key, $value) = each($array) ) $function($array[$key], $key, $userData); } // Test function 2 function array_walk_foreach1(&$array, $function, $userData = null) { foreach ($array as $key => &$value ) $function($value, $key, $userData); } // Test function 3 function array_walk_foreach2(&$array, $function, $userData = null) { foreach ($array as $key => $value ) $function($array[$key], $key, $userData); } function some_function(&$value, $key, $userData) { $value = "$key => $userData"; } function test($function, $count = 10000, $arrayElements = 1000) { echo $function, ' ... '; $array = array_fill(0, $arrayElements, "some text value"); $timer = microtime(true); for( $i = 0; ++$i < $count; ) $function($array, 'some_function', 'some user data'); printf("%.3f sec\n", microtime(true) - $timer); return $array; } ?> Output (PHP 5.4.9-4ubuntu2.2 (cli) (built: Jul 15 2013 18:24:39)) ========================= array_walk ... 13.572 sec array_walk_list_each ... 0.027 sec array_walk_foreach1 ... 15.356 sec array_walk_foreach2 ... 17.416 sec bool(true) bool(true) bool(true) Output (PHP 5.5.0 (cli) (built: Jul 16 2013 17:59:42) - same server) ========================= array_walk ... 4.776 sec array_walk_list_each ... 0.006 sec array_walk_foreach1 ... 4.482 sec array_walk_foreach2 ... 5.166 sec bool(true) bool(true) bool(true) PHP 5.5 array_walk looks pretty good but list each is more and more quickly... ---- Server IP: 69.147.83.199 Probable Submitter: 91.215.129.130 ---- Manual Page -- http://php.net/manual/en/function.array-walk.php Edit -- https://master.php.net/note/edit/112722 Del: integrated -- https://master.php.net/note/delete/112722/integrated Del: useless -- https://master.php.net/note/delete/112722/useless Del: bad code -- https://master.php.net/note/delete/112722/bad+code Del: spam -- https://master.php.net/note/delete/112722/spam Del: non-english -- https://master.php.net/note/delete/112722/non-english Del: in docs -- https://master.php.net/note/delete/112722/in+docs Del: other reasons-- https://master.php.net/note/delete/112722 Reject -- https://master.php.net/note/reject/112722 Search -- https://master.php.net/manage/user-notes.php