note 126687 added to function.array-merge

I wished to point out that while other comments state that the spread operator should be faster than array_merge, I have actually found the opposite to be true for normal arrays. This is the case in both PHP 7.4 as well as PHP 8.0. The difference should be negligible for most applications, but I wanted to point this out for accuracy. Below is the code used to test, along with the results: <?php $before = microtime(true); for ($i=0 ; $i<10000000 ; $i++) { $array1 = ['apple','orange','banana']; $array2 = ['carrot','lettuce','broccoli']; $array1 = [...$array1,...$array2]; } $after = microtime(true); echo ($after-$before) . " sec for spread\n"; $before = microtime(true); for ($i=0 ; $i<10000000 ; $i++) { $array1 = ['apple','orange','banana']; $array2 = ['carrot','lettuce','broccoli']; $array1 = array_merge($array1,$array2); } $after = microtime(true); echo ($after-$before) . " sec for array_merge\n"; ?> PHP 7.4: 1.2135608196259 sec for spread 1.1402177810669 sec for array_merge PHP 8.0: 1.1952061653137 sec for spread 1.099925994873 sec for array_merge ---- Server IP: 45.112.84.4 Probable Submitter: 45.112.85.242 (proxied: 97.88.220.16) ---- Manual Page -- https://php.net/manual/en/function.array-merge.php Edit -- https://main.php.net/note/edit/126687 Del: integrated -- https://main.php.net/note/delete/126687/integrated Del: useless -- https://main.php.net/note/delete/126687/useless Del: bad code -- https://main.php.net/note/delete/126687/bad+code Del: spam -- https://main.php.net/note/delete/126687/spam Del: non-english -- https://main.php.net/note/delete/126687/non-english Del: in docs -- https://main.php.net/note/delete/126687/in+docs Del: other reasons-- https://main.php.net/note/delete/126687 Reject -- https://main.php.net/note/reject/126687 Search -- https://main.php.net/manage/user-notes.php