What is the use of memory_get_usage (), memory_get_peak_usage (), getrusage () functions in PHP

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memory_get_usage(),memory_get_peak_usage(),getrusage()

The memory_get_usage() function returns memory usage, the memory_get_peak_usage() function returns peak memory usage, and getrusage() returns CUP usage. These functions will give you useful information when debugging PHP code performance. Note, however, that Window is not valid in these functions.

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