Calculate the time required to perform a specific function

Question

I can do it? eg. if i want to check if str_replace() faster than preg_replace() ?

Answer 1

You can run the same line 10,000 times (or more) in your script and use microtime(true) to indicate the time it took.

Link: microtime ()

Answer 2

A simple way:

 $time = microtime(true); // time in Microseconds // Your code here echo (microtime(true) - $time) . ' elapsed'; 

The hard (er) way: Use the code profiler to find out how long your methods will take.

Answer 3

I found this "bisko" answer in this thread.

$ start = microtime (true);

for (...) {....}

$ end = microtime (true);

echo ($ end - $ start). 'seconds;

The for loop can be replaced at any time.