News Feed
Sections




News Archive
Looking for more information on how to do PHP the right way? Check out PHP: The Right Way

Fabien Potencier's Blog:
The PHP Ternary Operator Fast or not?
July 18, 2011 @ 10:35:36

In a new post Fabien Potencier looks at the ternary operator in PHP and wonders which is faster - using it or not (well, sort of...)

People like micro-optimizations. They are easy to understand, easy to apply... and useless. But some time ago, while reviewing pull requests for Twig, I read an interesting discussion about the performance of the ternary operator in PHP (thanks to @nikic for the investigation). Do you know which [example] snippet is the fastest (of course, they do exactly the same)? The right answer is: it depends.

He notes that it's all about the data being worked with. As some of his tests show (testing code included) there does end up being a difference between using it on a small and large dataset. After investigation, it was found that the ternary operator copies (copy-on-write) the value versus an "if" that just evaluates. He also mentions the new "?" version of the ternary syntax in PHP 5.3, but notes it still suffers from the same issue.

0 comments voice your opinion now!
ternary optimize speed dataset copyonwrite


blog comments powered by Disqus

Similar Posts

Erika Heidi Reinaldo: Optimizing Symfony applications on Vagrant boxes

Anthony Ferrara's Blog: On Optimization in PHP

WebReference.com: Unary, Binary, and Ternary Operators in PHP

Brian Moon's Blog: Big arrays in PHP

Paul Reinheimer's Blog: Memory usage in PHP


Community Events





Don't see your event here?
Let us know!


introduction code framework series interview podcast laravel opinion unittest symfony2 list testing developer threedevsandamaybe experience refactor release community install language

All content copyright, 2014 PHPDeveloper.org :: info@phpdeveloper.org - Powered by the Solar PHP Framework