Getting size in memory of an object in PHP?

Question

There is a way to get the total memory PHP is using (memory_get_usage()) but how does one get the size in memory of an individual object?

I\'m obviously

Answer 1

Since clone (from Prof83's answer) didn't work for me, I tried to serialize and unserialize the variable whose size I want to measure:

function getMemoryUsage($var) {
    $mem = memory_get_usage();
    $tmp = unserialize(serialize($var));
    // Return the unserialized memory usage
    return memory_get_usage() - $mem;
}

I think it reports better results, at least for me.