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Discussion on: A Slow Death by For Loops

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bengreenberg profile image
Ben Greenberg Author

Yes, I agree there are some great tools out there for managing multiple sources of data, but sometimes we are limited by the business specifications. I also agree that foreach() looks a lot nicer than a for() loop, but I'm not 100% sure that it is faster than a for() loop with the length calculated in advance. I've seen a lot written about that subject with various benchmarks going both ways. Of course, in most situations, the difference will be negligible either way.

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vasilvestre profile image
Valentin Silvestre

As you can see here : 3v4l.org/7Kvf5 , PHP7 made foreach() 50% as fast as for(). It depend of version tho
To be honest, that's premature optimisation to use for() instead of foreach() from now. If you really need high-performance, you shouldn't use PHP imo

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yechielk profile image
Yechiel Kalmenson

Unfortunately, sometimes those decisions are made for you by others...

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vasilvestre profile image
Valentin Silvestre

Sometimes it's worth mentionning the fact that with low effort, you can improve a lot the process and (because that's the only thing that interest people) the result