ParagonIE\CSPBuilder\CSPBuilder::saveSnippet PHP Method

    public function saveSnippet(string $outputFile, string $format = self::FORMAT_NGINX) : bool
    {
        if ($this->needsCompile) {
            $this->compile();
        }
        // Are we doing a report-only header?
        $which = $this->reportOnly ? 'Content-Security-Policy-Report-Only' : 'Content-Security-Policy';
        switch ($format) {
            case self::FORMAT_NGINX:
                // In PHP < 7, implode() is faster than concatenation
                $output = \implode('', ['add_header ', $which, ' "', \rtrim($this->compiled, ' '), '";', "\n"]);
                break;
            case self::FORMAT_APACHE:
                $output = \implode('', ['Header add ', $which, ' "', \rtrim($this->compiled, ' '), '"', "\n"]);
                break;
            default:
                throw new \Exception('Unknown format: ' . $format);
        }
        return \file_put_contents($outputFile, $output) !== false;
    }