note 115379 added to function.array-map

PHP 5.5.14 <?php $columns = range(1, 100000); $time = microtime(true); /* 0.067003011703491 sec 24903680 byte */ array_map(function ($value) { return 'p.' . $value; }, $columns); /* 0.042001962661743 sec 19398656 byte */ foreach ($columns as $key => $column) { $columns[$key] = 'p.' . $column; } /* 0.05500316619873 sec 10747904 byte */ array_walk($columns, function (&$value, $key) { $value = 'p.' . $value; }); /* 0.0260009765625 sec 10747904 byte */ foreach ($columns as &$column) { $column = 'p.' . $column; } echo microtime(true) - $time . "\n" . memory_get_peak_usage(true) . "\n"; ---- Server IP: 72.52.91.14 Probable Submitter: 86.57.144.21 ---- Manual Page -- http://php.net/manual/en/function.array-map.php Edit -- https://master.php.net/note/edit/115379 Del: integrated -- https://master.php.net/note/delete/115379/integrated Del: useless -- https://master.php.net/note/delete/115379/useless Del: bad code -- https://master.php.net/note/delete/115379/bad+code Del: spam -- https://master.php.net/note/delete/115379/spam Del: non-english -- https://master.php.net/note/delete/115379/non-english Del: in docs -- https://master.php.net/note/delete/115379/in+docs Del: other reasons-- https://master.php.net/note/delete/115379 Reject -- https://master.php.net/note/reject/115379 Search -- https://master.php.net/manage/user-notes.php