note 117945 added to function.array-merge

We noticed array_merge is relatively slower than manually extending an array: given: $arr_one[ 'x' => 1, 'y' => 2 ]; $arr_two[ 'a' => 10, 'b' => 20 ]; the statement: $arr_three = array_merge( $arr_one, $arr_two ); is routinely 200usec slower than: $arr_three = $arr_one; foreach( $arr_two as $k => $v ) { $arr_three[ $k ] = $v; } 200usec didn't matter...until we started combining huge arrays. PHP 5.6.x ---- Server IP: 72.52.91.14 Probable Submitter: 74.96.181.211 ---- Manual Page -- http://php.net/manual/en/function.array-merge.php Edit -- https://master.php.net/note/edit/117945 Del: integrated -- https://master.php.net/note/delete/117945/integrated Del: useless -- https://master.php.net/note/delete/117945/useless Del: bad code -- https://master.php.net/note/delete/117945/bad+code Del: spam -- https://master.php.net/note/delete/117945/spam Del: non-english -- https://master.php.net/note/delete/117945/non-english Del: in docs -- https://master.php.net/note/delete/117945/in+docs Del: other reasons-- https://master.php.net/note/delete/117945 Reject -- https://master.php.net/note/reject/117945 Search -- https://master.php.net/manage/user-notes.php