note 110608 added to function.microtime

Skilled thought time and microtime returns different values because his test code sometimes says they are different: <?php for ($i = 0; $i < 1000000; $i++) { if (time() < floor(microtime(true))) { echo "."; } } ?> But the problem is that the functions are not executed at the same time and therefor a change in seconds can incur in meantime. Maybe it's more obvious if we write it like: <?php for ($i = 0; $i < 1000000; $i++) { $time1 = time(); $time2 = floor(microtime(true)); if ($time1 < $time2) { echo "."; } } ?> It should also be noted that getting the time costs time! So by measuring time your performance is acctually worse. If it's noticable or not of course deppends on the code you are measuring and how often you measure. ---- Server IP: 69.147.83.199 Probable Submitter: 213.185.179.163 ---- Manual Page -- http://www.php.net/manual/en/function.microtime.php Edit -- https://master.php.net/note/edit/110608 Del: integrated -- https://master.php.net/note/delete/110608/integrated Del: useless -- https://master.php.net/note/delete/110608/useless Del: bad code -- https://master.php.net/note/delete/110608/bad+code Del: spam -- https://master.php.net/note/delete/110608/spam Del: non-english -- https://master.php.net/note/delete/110608/non-english Del: in docs -- https://master.php.net/note/delete/110608/in+docs Del: other reasons-- https://master.php.net/note/delete/110608 Reject -- https://master.php.net/note/reject/110608 Search -- https://master.php.net/manage/user-notes.php