note 39209 added to function.array-push

However, don't forget that array_push() does more than [], it also performs a count and returns the value. Modifying your code ever so slightly (see below), this puts array_push in the lead (not suprisingly). So my conclusion would be that if I care about the number of elements in the array, then I'd use array_push(), if I don't (which is usually the case), then I'd use the [] method. Results... [] method: 0.34943199 push method: 0.31505919 difference: -0.03437280 Modified section of code... $s_test_begin = FullMicroTime(); for($i = 0; $i <= 50000; $i++) { $num_tot = array_push($test2, $i); } $s_test_end = FullMicroTime(); $f_test_begin = FullMicroTime(); for($i = 0; $i <= 50000; $i++) { $test[] = $i; $num_tot = count($test); } $f_test_end = FullMicroTime(); ---- Manual Page -- http://www.php.net/manual/en/function.array-push.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+39209 Delete -- http://master.php.net/manage/user-notes.php?action=delete+39209&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+39209&report=yes Search -- http://master.php.net/manage/user-notes.php