--TEST--
Testing parameter type-hinted with interface
--FILE--
<?php

namespace foo;

interface foo {
	
}

class bar {
	public function __construct(foo $x = NULL) {
		var_dump($x);
	}
}

class test implements foo {
	
}


new bar(new test);
new bar(null);
new bar(new \stdclass);

?>
--EXPECTF--
object(foo\test)#%d (0) {
}
NULL

Fatal error: Uncaught TypeError: Argument 1 passed to foo\bar::__construct() must implement interface foo\foo, instance of stdClass given, called in %s on line %d and defined in %s:%d
Stack trace:
#0 %s(%d): foo\bar->__construct(Object(stdClass))
#1 {main}
  thrown in %s on line %d