I'm using file_get_contents just to call a php file (which returns some data); like that:
file_get_contents('http://example.com/foo.php');
and NOT e.g. $holding_var = file_get_contents('http://example.com/foo.php');
Will it use the assigned memory of 20kB (let's say the meant file called by my script returns a 10kB response) or will not use the memory at all since the result is not stored in any variable?