Description:
------------
The error message produced by PHP is a non sense. This should just work.

Reproduce code:
---------------
class DSProxy {
	function stream_open(string $path, string $mode, int $options, string $opened_path) {
		return false;
	}

        ...
}

stream_wrapper_register('proxy', 'DSProxy') or die("ERROR: Could not register the proxy protocol!\n");

$fp = fopen('proxy://www.dinsoft.net', 'r');

Expected result:
----------------
I expect it to work, or at least to produce a meaning full error message.

Actual result:
--------------
PHP Catchable fatal error:  Argument 1 passed to DSProxy::stream_open() must be
an instance of string, string given in E:\dev\flights\proxy.php on line 8

Catchable fatal error: Argument 1 passed to DSProxy::stream_open() must be an in
stance of string, string given in E:\dev\flights\proxy.php on line 8