Note that the description for `memory_get_usage` is different than it's default parameter!
"`int memory_get_usage ([ bool $real_usage = FALSE ] )`
Returns the amount of memory, in bytes, that's currently being allocated to your PHP script. "
Default parameter = `FALSE`
WRONG description: Returns the amount of memory, in bytes, that's currently being allocated to your PHP script.
It must be: Returns the amount of memory, in bytes, that's currently used by your PHP script.