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@zmiftah
Forked from hadl/microtime_diff.php
Last active August 29, 2015 14:11
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<?php
/**
* Calculate a precise time difference.
* @param string $start result of microtime()
* @param string $end result of microtime(); if NULL/FALSE/0/'' then it's now
* @return flat difference in seconds, calculated with minimum precision loss
*/
function microtime_diff($start, $end = null) {
if (!$end) $end = microtime();
list($start_usec, $start_sec) = explode(" ", $start);
list($end_usec, $end_sec) = explode(" ", $end);
$diff_sec = intval($end_sec) - intval($start_sec);
$diff_usec = floatval($end_usec) - floatval($start_usec);
return floatval($diff_sec) + $diff_usec;
}
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