How does the use of memory_get_usage(true) affect the accuracy of memory usage measurement in PHP scripts?

Using memory_get_usage(true) in PHP scripts can affect the accuracy of memory usage measurement as it includes the memory allocated to PHP itself in addition to the memory used by the script. To get a more accurate measurement of only the memory used by the script, you should use memory_get_usage() without passing true as a parameter.

// Get memory usage of the script without including memory allocated to PHP itself
$memoryUsage = memory_get_usage();