If I have many references such as this code snippet below throughout my application, where I am using double-quotes instead of single-quotes/apostrophes when there is no parsing required would replacing all of these double-quotes with single-quotes has a positive effect on the performance of my application?
$is_parkland = $info["is_parkland"];
I understand that using the " in the example above is asking PHP to parse the contents between the double-quotes. This sort of thing is apparent across my application in legacy code.
I have around 300,000 lines of PHP in my application and, really, i’m interested to know if they were all replaced, as necessary, would this have a noticable or positive effect on my application?
Is it worth the effort? I am using PHP 5.3.13.
PHP Benchmarks:
http://phpbench.com/
It looks like with newer versions of PHP there is little difference between single and double quotes.