Description:
------------
Private/protected property/method is visible in methods of another object of that same class

Reproduce code:
---------------
class A {
      private $sameVar = "it's private variable!<br>";
      
      private function testMthd () {
            echo "it's private method!<br>";
      }
      
      public function testVar($otherObj) {
            echo $otherObj->sameVar;
            $otherObj->testMthd();
      }
}

$sm1 = new A();
$sm2 = new A();

$sm1->testVar($sm2);

Expected result:
----------------
it should rise an "Fatal error: Cannot access private property"

Actual result:
--------------
it's private variable!
it's private method!