Timing and duration using microtime() - and beware of float math!
I was bold enough to use:
$starttime = microtime( TRUE ); // Initiate star
:
list($sec, $usec) = explode('.', microtime( TRUE ) - $starttime ); //split the microtime on .
print date('H:i:s.', $sec) . $usec; //appends the decimal portion of seconds
Source: @@Stackoverflow_icon@@ How to convert microtime() to HH:MM:SS:UU
BUT microtime( TRUE ) - $starttime does NOT do the job!
The two time stamps may/will not necessarily have the same precision i.e. you have a perverted result (See: Warning. Floating point precision. Or for short: 0.0000081062 may be returned as 8.1062316894531E-6 - and displayed as 8.1 sec!
However using this litle gem:
function microtime_diff( $time_end, $time_start, $precision = 10 )
{
return( sprintf( "%.*f", $precision, round($time_end, $precision) - round($time_start, $precision) ) );
} // microtime_diff()
can save you face.
Combining this with microtime2human( $microtime ) you can do this:
$time_start = microtime( TRUE ); // Initiate star
// do something
$time_end = microtime(true);
$duration = microtime_diff($time_end, $time_start);
print microtime2human( $duration );
and get a proper human readable result like:
00:00:00.0000090599
[!NOTE] microtime2human() uses ISO-86001 for periode: P[n]Y[n]M[n]DT[n]H[n]M[n]S This is NOT pretty, but that’s how the standard is.