note 39671 added to language.operators.increment

Interesting performance note: $i++ seems to be slightly slower than ++$i, when used on a line by itself the 2 have the same purpose. It's not much, but over 100,000 incements the pre-increment is about .004 seconds faster on average. <? $start = 0; $stop = 0; $post = array(); $pre = array(); function perfgetmicrotime() { list($usec, $sec) = explode(' ',microtime()); return ((float)$usec + (float)$sec); } //preload the variable to allocate the memory so the test will be fair for both $i = 0; while ($i < 100000) { $i++; } //start post test for($j = 0 ; $j < 100 ; $j++) { $i = 0; $start = perfgetmicrotime(); while ($i < 100000) { $i++; } $stop = perfgetmicrotime(); $post[] = $stop - $start; } echo "Post average: ".(array_sum($post)/count($post))."\n"; //start pre test for($j = 0 ; $j < 100 ; $j++) { $i = 0; $start = perfgetmicrotime(); while ($i < 100000) { ++$i; } $stop = perfgetmicrotime(); $pre[] = $stop - $start; } echo "Pre average: ".(array_sum($pre)/count($pre))."\n"; ?> ---- Manual Page -- http://www.php.net/manual/en/language.operators.increment.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+39671 Delete -- http://master.php.net/manage/user-notes.php?action=delete+39671&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+39671&report=yes Search -- http://master.php.net/manage/user-notes.php