note 123767 added to function.array-key-first

Since the other notes for polyfills did not account for the internal pointer, empty arrays, or pre-PHP7, this polyfill should work reliably for all PHP5 and PHP7 versions: <?php if (!function_exists('array_key_first')) { /** * Gets the first key of an array * * @param array $array * @return mixed */ function array_key_first($array) { if (!is_array($array) || !count($array)) { return null; } $keys = array_keys($array); return $keys[0]; } } ---- Server IP: 208.43.231.9 Probable Submitter: 82.199.157.34 (proxied: 24.236.137.192) ---- Manual Page -- http://php.net/manual/en/function.array-key-first.php Edit -- https://master.php.net/note/edit/123767 Del: integrated -- https://master.php.net/note/delete/123767/integrated Del: useless -- https://master.php.net/note/delete/123767/useless Del: bad code -- https://master.php.net/note/delete/123767/bad+code Del: spam -- https://master.php.net/note/delete/123767/spam Del: non-english -- https://master.php.net/note/delete/123767/non-english Del: in docs -- https://master.php.net/note/delete/123767/in+docs Del: other reasons-- https://master.php.net/note/delete/123767 Reject -- https://master.php.net/note/reject/123767 Search -- https://master.php.net/manage/user-notes.php