Description:
------------
I had some memory overflow errors. I logged the memory usage step by step and then I see a difference of 50Mo between two logs.

In the method called between this two logs, I used a static class attribute as a non-static one (with $this). The modification on the attribute took effect but triggered an "Interoperability or Compatibility Notice".
I fixed this error and I had a gain of 50 Mo!!

I have the same bug with a non-static method used as a static method (with self::). I had a gain of 90Mo because this method was really far away in the code.


It is a pretty harsh punishment for a compatibility error ;-)

Test script:
---------------
class LeakTester
{
	private static $nTest = 0;

	public function Test()
	{
		$this->nTest++;
		echo $this->nTest."<br/>\n";
	}
}

// ---> Test
$oTest = new LeakTester();
$oTest->Test();
echo memory_get_usage()."<br/>\n"; // (1)
$oTest->Test();
echo memory_get_usage()."<br/>\n"; // (2) > (1)

Expected result:
----------------
(2) should be equal to (1)

Actual result:
--------------
(2) is really greater than (1)