PHP script stops without error message (Which error type?)

[BleedingVampireLove]

a PHP script stops without an error message, if I change the signature of a method of a class, which implements a intereface, e.g.:\[code\]interface A{ public function somefunction();}class B implements A{ public function somefunction(XY $xy); { ... }} \[/code\]This is an error of course, but there is no error message shown.What is the name of this error type? (I already searched a lot, but with the wrong phrases obviously)How can I log or output this error?I'm using PHP 5.3.1 (with XAMPP for Windows 1.7.3)(I used Zend Debugger with PHP < 5.3 earlier, where those erros were shown in the Eclipse console, but now I'm using XDebug.)Thanks in advance for any hint!