public function sendFile($file) {
		if ($this->sent) {
			return $this;
		}

		$this->setMode(self::MODE_FILE);
		$this->send($file);

		return $this;
	}
public function sendFile($file) {
		if ($this->sent) {
			return $this;
		}

		$this->setMode(self::MODE_FILE);
		$this->send($file);

		return $this;
	}
public function sendFile ( $ file ) { if ( $ this -> sent ) { return $ this ; } $ this -> setMode ( self :: MODE_FILE ) ; $ this -> send ( $ file ) ; return $ this ; }
Send a file.

@param string $file
@return self
Send a file .