I have a foreach statement in my code, where each iteration calculates huge amounts of data and goes to the next iteration. I run this code, but when I read the log, I see there's a memory leak error.

PHP.net says when this happens, using gc_enabled() is a good way to handle this.

I've added these lines to last line of the foreach block:

echo "Check GC enabled : " . gc_enabled();
echo "Number of affected cycles : " . gc_collect_cycles();

And this is the output:

Check GC enabled : 1
Number of affected cycles : 0

Why do cycles exist, but the affected cycles is 0?