note 29531 added to function.microtime

To calculate the elapsed time with high precision, the example of the manual page IS WRONG: floats can accomodate about only 14 digits, while sec+usec require about 16 digits. So, my proposal: function elapsed($start) { $end = microtime(); list($start2, $start1) = explode(" ", $start); list($end2, $end1) = explode(" ", $end); $diff1 = $end1 - $start1; $diff2 = $end2 - $start2; if( $diff2 < 0 ){ $diff1 -= 1; $diff2 += 1.0; } return $diff2 + $diff1; } $start = microtime(); /* ... lot of code here ... */ $t = elapsed($start); echo("elapsed time = $t seconds\n"); -- http://www.php.net/manual/en/function.microtime.php http://master.php.net/manage/user-notes.php?action=edit+29531 http://master.php.net/manage/user-notes.php?action=delete+29531 http://master.php.net/manage/user-notes.php?action=reject+29531