php microseconds

Question

I'm using
echo date('H:i:s')." this step time\n";
in order to know how much time needs for each function in order to be executed.

How can I know the time with microseconds also?

Answer 1

Just to add, there's PHP's microtime() function, which can be used like this:

$time_start = microtime(true);

//do stuff here

$time_end = microtime(true);
$time = $time_end - $time_start;

echo "It took $time seconds\n";