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All of this is very nice, but it takes a little while to get to know PHP’s tricks, especially those related to performance and memory consumption. There are lots of subtle things in PHP that can save a lot of memory and give a small extra boost in performance. This article serves as an introduction to profiling PHP applications, and to making changes to a script and comparing the values of the optimizations.To quote the dictionary, a profile is a formal summary or analysis of data, of 
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