public function renderWithPhp($input, array $vars, $filename = null)
    {
        return parent::render($input, $vars, $filename);
    }
public function renderWithPhp($input, array $vars, $filename = null)
    {
        return parent::render($input, $vars, $filename);
    }
public function renderWithPhp ( $ input , array $ vars , $ filename = null ) { return parent :: render ( $ input , $ vars , $ filename ) ; }
Render using the PHP engine.

@param string $input    pug input or file
@param array  $vars     to pass to the view
@param string $filename optional file path

@throws \Exception

@return string
Render using the PHP engine .