Description:
------------
If an exception is thrown within a try block and more than two catch blocks follow, the exception may not be caught.  If the exception matches either of the first two catch blocks then the exception will be caught.  However, if the exception does not match the first two catch blocks, it will skip any remaining catch blocks and remain uncaught.

In the code below, the exception is caught properly if the second catch block is commented out.  Once it is included again though, the exception is not caught.

Reproduce code:
---------------
<?php
class Ex1 extends Exception { }
class Ex2 extends Exception { }
class Ex3 extends Exception { }

try {
  throw new Ex3("Ex3");

} catch (Ex1 $e) {
  echo ("Ex1: " . $e->getMessage() ."\n");

} catch (Ex2 $e) {
  echo ("Ex2: " . $e->getMessage() ."\n");
  
} catch (Exception $e) {  // Note: trying to catch Ex3 also fails
  echo ("Exception: " . $e->getMessage() . "\n");
}
exit(0);
?>

Expected result:
----------------
Execption: Ex3


Actual result:
--------------
Fatal error: Uncaught exception 'Ex3' with message 'Ex3' exception.php:8
Stack trace:
#0 {main}
  thrown in exception.php on line 8