Hey, #PHP friends - what's the *easiest* way to compare the speed & memory use of two different functions?
The functions themselves are quite simple (a dozen or so lines) so I can't really be bothered to set up a whole XDebug environment.
Is there an online tool which will give me a rough answer?
nostr:npub19lt4284mghqxekzm6n5njxurnxrxhqhrva2leusdsuu5ja5jeycq66qfjk If you want a rough and ready figure you can call microtime before and after and compare the results, likewise memory_get_usage. They aren't great but they will probably tell you if one function is taking 10x as long as another.
If they're not enough then really Xdebug + an analyser such as KCacheGrind are the way to go.
https://3v4l.org/ allows you to run code online but I don't think it would help with profiling.
nostr:npub19lt4284mghqxekzm6n5njxurnxrxhqhrva2leusdsuu5ja5jeycq66qfjk Set-up nostr:npub1gv565wy8tykraxrnsyqnuhh7wtsjfw02t3fx905e9jqj407h6rmqach8cl — its profiling is exactly what you want.
You can do a simple profile of these metrics yourself like so:
For speed you can use microtime: https://www.php.net/manual/en/function.microtime.php
1. Store the microtime in a variable before calling your function.
2. Call your function
3. Store the micotime in anothee variable after the function call
4. Calculate a difference between the two variables to see how many microseconds the function took to run.
For Memory you can use memory_get_usage: https://www.php.net/manual/en/function.memory-get-usage.php
Repeat the process above but with memory_get_usage.
Depending on what your function does, you may also want to add some calls to memory_get_usage within the function itself and store the results in a global variable for later printing the results.
I hope this helps.
