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Can you decide which PHP version the benchmark will run on? And is OPcache enabled?
If so target PHP 8.0 and utilize the JIT compiler which runs on x86 CPUs (i.e. Intel/AMD).
Other micro optimisations is using the fully qualified name of the function if you are in a namespace as certain functions are special cased by the VM.
However, your algorithm will always be the bottleneck and if you can improve that you'll get better results than doing tiny language config optimizations.
So benchmark often and try to reduce the big O notation cost. :-)
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PHP (from the English Hypertext Preprocessor - hypertext preprocessor) is a scripting programming language for developing web applications. Supported by most hosting providers, it is one of the most popular tools for creating dynamic websites.
The PHP scripting language has gained wide popularity due to its processing speed, simplicity, cross-platform, functionality and distribution of source codes under its own license.
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