Description:
------------
The documentation says:

---
The following words cannot be used to name a class, interface or trait, and they are also prohibited from being used in namespaces.
---
http://php.net/manual/en/reserved.other-reserved-words.php

But it does not mention the use of these words in function names.

Is it safe to use those in the provided manner (see test case)?

Test script:
---------------
<?php
/* This works??? */
namespace A\B {
	function String() {

	}
}
namespace {
	A\B\String();
}
?>

<?php
/* This breaks */
namespace A\B {
	function private() {

	}
}
namespace {
	A\B\private();
}
?>

<?php
/* This also breaks */
namespace A\B {
	class String {}
}
namespace {
	$str = new A\B\String();
}
?>