Track memory usage of a method

Question

I have yet to find an elegant solution for this. I have a class with a method I want to track the memory usage of without modifying the function:

class Example
{         


        

Answer 1

It looks like it has already 'freed up' memory after the call to hello() has ended.

What are the results when you do:

$s = memory_get_usage();

$class->hello('a');

echo memory_get_peak_usage() - $s;