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Commenting interpreted code and performance
When you include a file in PHP with include() or any other function, its perfomance is affected by the amount of comments of the included file?
(I am not saying I am going to sacrifice legibility)
No, the savings of time required to parse the file is not even measurable (too small) and not worth slightest consideration. It's definitely not the bottleneck of performance, so to say.
来源：https://stackoverflow.com/questions/7786136/does-comments-affect-when-including-files-in-php