78 lines
2.1 KiB
PHP
78 lines
2.1 KiB
PHP
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<?php
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namespace App\Services;
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use Intervention\Image\Facades\Image;
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use Exception;
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class QRCodeService
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{
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protected $phpqrcode;
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protected $tempDir;
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public function __construct()
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{
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$this->tempDir = storage_path('app/temp');
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if (!file_exists($this->tempDir)) {
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mkdir($this->tempDir, 0777, true);
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}
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// 引入PHP QR Code库
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require_once base_path('vendor/phpqrcode/qrlib.php');
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$this->phpqrcode = new \QRcode();
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}
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public function generate(string $text, int $size, string $errorCorrection = 'M', ?string $logoPath = null)
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{
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$tempFile = $this->tempDir . '/' . md5($text . time()) . '.png';
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// 设置错误纠正级别
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$errorCorrectionLevel = match($errorCorrection) {
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'L' => QR_ECLEVEL_L,
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'M' => QR_ECLEVEL_M,
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'Q' => QR_ECLEVEL_Q,
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'H' => QR_ECLEVEL_H,
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default => QR_ECLEVEL_M
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};
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try {
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// 生成二维码
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$this->phpqrcode->png($text, $tempFile, $errorCorrectionLevel, $size);
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// 如果提供了Logo，则合并Logo
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if ($logoPath) {
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$this->mergeLogo($tempFile, $logoPath);
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}
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// 读取生成的图片
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$qrCode = file_get_contents($tempFile);
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// 删除临时文件
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unlink($tempFile);
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return $qrCode;
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} catch (Exception $e) {
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if (file_exists($tempFile)) {
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unlink($tempFile);
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}
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throw $e;
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}
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}
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protected function mergeLogo(string $qrCodePath, string $logoPath)
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{
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$qrCode = Image::make($qrCodePath);
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$logo = Image::make($logoPath);
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// 调整Logo大小，不超过二维码的1/4
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$logoSize = min($qrCode->width(), $qrCode->height()) / 4;
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$logo->resize($logoSize, $logoSize, function ($constraint) {
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$constraint->aspectRatio();
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});
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// 在二维码中心添加Logo
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$qrCode->insert($logo, 'center');
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$qrCode->save($qrCodePath);
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}
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}
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