Comments on: PHP Count Performance http://josephscott.org/archives/2010/01/php-count-performance/ Wed, 28 Jul 2010 19:47:20 +0000 hourly 1 http://wordpress.org/?v=3.1-alpha By: Joseph Scott http://josephscott.org/archives/2010/01/php-count-performance/#comment-19324 Joseph Scott Tue, 12 Jan 2010 18:27:34 +0000 http://josephscott.org/?p=1674#comment-19324 It's quite possible that PHP4 would have shown an even bigger difference. Hopefully there aren't too many cases of PHP4 being used for production sites any more. It’s quite possible that PHP4 would have shown an even bigger difference. Hopefully there aren’t too many cases of PHP4 being used for production sites any more.

]]> By: Angelo Mandato http://josephscott.org/archives/2010/01/php-count-performance/#comment-19322 Angelo Mandato Tue, 12 Jan 2010 18:02:25 +0000 http://josephscott.org/?p=1674#comment-19322 Good to know. I bet if you ran this test on PHP 4 you see an even bigger difference in execution time. I should have noticed the use of memory_get_peak_usage(), that's a PHP 5.2+ function. Good to know. I bet if you ran this test on PHP 4 you see an even bigger difference in execution time.

I should have noticed the use of memory_get_peak_usage(), that’s a PHP 5.2+ function.

]]> By: Joseph Scott http://josephscott.org/archives/2010/01/php-count-performance/#comment-19321 Joseph Scott Tue, 12 Jan 2010 17:54:05 +0000 http://josephscott.org/?p=1674#comment-19321 I used PHP 5.2.9 to run those. I used PHP 5.2.9 to run those.

]]> By: Angelo Mandato http://josephscott.org/archives/2010/01/php-count-performance/#comment-19320 Angelo Mandato Tue, 12 Jan 2010 17:49:54 +0000 http://josephscott.org/?p=1674#comment-19320 Which version of PHP are you using for this test? The performance of count()/sizeof() is supposed to be linear in PHP 5+ since the length of the array is maintained with the array rather than calculated by the function call. I wouldn't be surprised though if calling count() once still makes a difference. Which version of PHP are you using for this test? The performance of count()/sizeof() is supposed to be linear in PHP 5+ since the length of the array is maintained with the array rather than calculated by the function call. I wouldn’t be surprised though if calling count() once still makes a difference.

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