public function previous()
	{
		if(isset($this->tokens[$this->index - 2]))
		{
			return $this->tokens[$this->index - 2];
		}
		
		return false;
	}
public function previous()
	{
		if(isset($this->tokens[$this->index - 2]))
		{
			return $this->tokens[$this->index - 2];
		}
		
		return false;
	}
public function previous ( ) { if ( isset ( $ this -> tokens [ $ this -> index - 2 ] ) ) { return $ this -> tokens [ $ this -> index - 2 ] ; } return false ; }
Get the previous token, returns false when there is no such token.

@return mixed
Get the previous token returns false when there is no such token .