--TEST--
is_subclass_of()
--SKIPIF--
<?php if (version_compare(zend_version(), '2.0.1-dev', '<')) die('skip ZendEngine 2 needed'); ?>
--FILE--
<?php
class a{}
class b extends a{}
class c extends b{}
$a=new a;
$b=new b;
$c=new c;
var_dump(is_subclass_of($a,"a"));
var_dump(is_subclass_of($b,"a"));
var_dump(is_subclass_of($c,"a"));
var_dump(is_subclass_of("a","a"));
var_dump(is_subclass_of("b","a"));
var_dump(is_subclass_of("c","a"));

?>
====DONE!====
--EXPECTF--
bool(false)
bool(true)
bool(true)
bool(false)
bool(true)
bool(true)
====DONE!====