public function args($key = 0) {
		if (!empty($this->args[$key])) {
			return $this->args[$key];
		}
		return null;
	}
public function args($key = 0) {
		if (!empty($this->args[$key])) {
			return $this->args[$key];
		}
		return null;
	}
public function args ( $ key = 0 ) { if ( ! empty ( $ this -> args [ $ key ] ) ) { return $ this -> args [ $ key ] ; } return null ; }
Get the value of a command line argument at a given key

@param integer $key
@return mixed returns null if key does not exist or the value of the key in the args array
Get the value of a command line argument at a given key