"PHP version 5.2.13 is running on this server" :/
PHP Performance Benchmarks
11–20 of 49 posts
Re: PHP Performance Benchmarks
#12[deleted]
Re: PHP Performance Benchmarks
#13The bad performance of count() and the lack of difference in performance between single and double quotes came as a surprise!
Re: PHP Performance Benchmarks
#14Does "ms" mean milliseconds or microseconds? And are these times for one iteration of the code fragment?
2 milliseconds to compare two strings seems awfully slow.
Re: PHP Performance Benchmarks
#15I'd love to see a benchmark of: for ($i = 0; $i vs foreach($users as $user)
I just coded up a benchmark and posted the ProTip on coderwall.
Re: PHP Performance Benchmarks
#16 I got this site bookmarked from a long time ago so I do not know what is the PHP version tested. Adding it because it seems to contain quite alot of different tests.
Re: PHP Performance Benchmarks
#17"PHP version 5.2.13 is running on this server" :/
This article is 2 years old.
Re: PHP Performance Benchmarks
#18I'd love to see a benchmark of: for ($i = 0; $i vs foreach($users as $user)
There are some similar benchmark here: http://www.phpbench.com/ Intuitively the for loop should be a lot fast as it isn't assigning anything each loop. Although in your example it may be slower because the count($users) would be ran on each iteration of the loop.
It only assigns $user in a foreach when the $user is modified, or if you are trying to outsmart PHP-core and use & to pass it as a reference.
Re: PHP Performance Benchmarks
#19The bad performance of count() and the lack of difference in performance between single and double quotes came as a surprise!
If I were writing a PHP parser, then I would convert double-quoted strings of the form "foo $bar baz" to 'foo '.$bar.' baz' when the script is first parsed. So executing the string concatenation in a loop would have no performance difference, because the string is only parsed the first time.
That's just a guess, though, having not actually looked at the code myself.
Re: PHP Performance Benchmarks
#20I'd love to see a benchmark of: for ($i = 0; $i vs foreach($users as $user)
I just coded up a benchmark and posted the ProTip on coderwall. http://coderwall.com/p/il1tog
You're re-calculating the count() on each iteration. Of course it's slower.
Fix that:
for($i = 0; $count = count($elements); $i