format = $format; return $this; } /** * Set the size of the QR code * * @param int $size The size in pixels * @return $this */ public function size(int $size): self { $this->size = $size; return $this; } /** * Set the error correction level * * @param string $level Error correction level: 'l', 'm', 'q', 'h' * @return $this */ public function errorCorrection(string $level): self { $this->errorCorrection = $level; return $this; } /** * Generate the QR code * * @param string $text The text to encode * @return string The generated QR code (SVG string) */ public function generate(string $text): string { // Ensure format is set (default to SVG) $format = $this->format ?? 'svg'; if ($format !== 'svg') { throw new InvalidArgumentException("Format '{$format}' is not supported. Only 'svg' is currently supported."); } // Calculate size and margin // If size is not set, calculate from module size (default module size is 11) if ($this->size === null) { $moduleSize = 11; $this->size = 29 * $moduleSize; } // Calculate margin: 4 modules on each side // Module size = size / 29, so margin = (size / 29) * 4 $moduleSize = $this->size / 29; $margin = (int) ($moduleSize * 4); // Map error correction level $errorCorrectionLevel = ErrorCorrectionLevel::valueOf('M'); // default if ($this->errorCorrection !== null) { $errorCorrectionLevel = match (mb_strtoupper($this->errorCorrection)) { 'L' => ErrorCorrectionLevel::valueOf('L'), 'M' => ErrorCorrectionLevel::valueOf('M'), 'Q' => ErrorCorrectionLevel::valueOf('Q'), 'H' => ErrorCorrectionLevel::valueOf('H'), default => ErrorCorrectionLevel::valueOf('M'), }; } // Create renderer style with size and margin $rendererStyle = new RendererStyle($this->size, $margin); // Create SVG renderer $renderer = new ImageRenderer( $rendererStyle, new SvgImageBackEnd() ); // Create writer $writer = new Writer($renderer); // Generate SVG $svg = $writer->writeString($text, 'ISO-8859-1', $errorCorrectionLevel); // Add class="qr-code" to the SVG element $svg = $this->addQrCodeClass($svg); return $svg; } /** * Add the 'qr-code' class to the SVG element * * @param string $svg The SVG string * @return string The SVG string with the class added */ protected function addQrCodeClass(string $svg): string { // Match