A web site, 5 human years in code (5 developers, approx one year), 10 of thousands of hits every day. Is it really going to have an impact if we change all ” to ‘ where possible?
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A web site, 5 human years in code (5 developers, approx one year), 10 of thousands of hits every day. Is it really going to have an impact if we change all ” to ‘ where possible?
See the double (“) vs. single (‘) quotes section at PHPBench (scroll to the end of the page). When I invoked the page, I saw the following results:
Unless 25µs makes a difference for your problem domain, it doesn’t matter.
I’m going to try to work out the math here, someone correct me if I make a mistake. Let’s say that you have 10,000 places where you used double quotes instead of single quotes at a 25µs difference per page load (who knows if it actually will work out that way, you need to benchmark your actual code) that would be a would be a 0.25 second difference in execution time. That could be significant depending on server-load if you were Facebook. However, I suspect that there are many other places in your codebase that are far more resource intensive that you will want to optimize before you even look at quotes. Just look at the pain points highlighed on the PhpBench page and you will see that you should have different priorities. Also, these numbers will be drastically different if you run a different php implementation like Quercus – which can solve some performance bottlenecks.