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http://bugs.php.net/how-to-report.php -> useless!

PHP isn't crashing or something. PHP just outputs an error message where no error is...

A simple example:

I get a "must not throw within __toString()"-Error in line 0
because a NULL-Value is supplied to a function where a integer is expected. Fine.

This is the stack:

#0  mdx_driver->getInfo() called at ...
#1  mdx_driver->__toString() called at ....
#2  mdx_driver->__construct(mdx_error_handler, 10000000, Array ()) called at ...
...

This value is hold on class construct:

public function __construct($intern_name, $version, $config = array()) {
    $this->_config = $config;
    $this->_private = $config;
    $this->_version = $version;
    $this->_intern_name = $intern_name;
}

Before getInfo() is called, I put a 
var_dump($this->_version);

And I get: NULL!!! But you can see, on construct $version is 1000000!

See the stack. There is not other method changing the value from $_version. The value will change in NULL. 

Other observations:

The $_version is declared and I get this error.
If $_version is generated by runtime, I get no error from this var. Instead, the
next declared class variable will "recognized" as Null.

That I know: The error isn't specific. It can happening whereever the situation is suitable and gives "not exists" or wrong-value-messages.

The error is a result of object-recursion and callbacks. When the call will turn into a loop. PHP should crash or abort through canceling call-loop at time limit. Instead various wrong error messages occur.
------------------------------------------------------------------------------

Anyway. It's there. If you like to get my files to see with own eyes, I will do.

I would say it is a memleak. Caused by my code so there is my bug but that shouldn't be possible and somebody could use it.

I noticed, that previous comment isn't liked to that "bug" - Because the constructer called a method which takes a log and call __toString() on the object. As the construct isn't finished the value isn't there.

But this doesn't explain why PHP doesn't find hardcoded Class-Definition at runtime, see post #1. If something went wrong with my code than PHP should give a warning if it detects such things?
"in line 0" clearly says that PHP doesn't know whats going on here because there is no stack. Why isn't?

I think the method is called again in a throwed exception. Therefore line 0. But this behaviour is not the best one...