Question

I’ve REALLY been wanting to test speeds of regex etc. and on php.net it has this example:

$time_start = microtime(true);

// Sleep for a while
usleep(100); // Or anything for that matter..

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

echo "Did nothing in $time seconds\n";

EDIT: What I meant was to play a large loop of functions in place of usleep(). It always shows a very random number that is always under 1. It shows nothing worth a benchmark!

Answer 1

Timers are like that. Wrap a loop around the function. Run it 10^6 times if you want to measure microseconds, 10^3 times if you want milliseconds. Don’t expect to get more than 2 decimal digits of precision.