53 lines
1.4 KiB
PHP
53 lines
1.4 KiB
PHP
<?php
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namespace app\common\server;
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use Endroid\QrCode\QrCode;
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use Endroid\QrCode\Writer\PngWriter;
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class autoload
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{
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public function generatePosterWithQR($backgroundUrl, $qrText)
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{
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// 加载背景图
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$backgroundImage = imagecreatefromjpeg($backgroundUrl);
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if (!$backgroundImage) {
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return;
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}
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$backgroundWidth = imagesx($backgroundImage);
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$backgroundHeight = imagesy($backgroundImage);
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// 生成二维码
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$qrSize = 850;
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$qrCode = new QrCode($qrText);
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$qrCode->setSize($qrSize);
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$writer = new PngWriter();
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$qrImage = $writer->write($qrCode);
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// 将二维码转换为 GD 图像资源
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$qrImageResource = imagecreatefromstring($qrImage->getString());
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// 计算二维码的放置位置
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$qrX = ($backgroundWidth - $qrSize) / 2;
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$qrY = ($backgroundHeight - $qrSize) * 0.78;
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// 将二维码绘制到背景图上
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imagecopy($backgroundImage, $qrImageResource, $qrX, $qrY, 0, 0, $qrSize, $qrSize);
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// 创建一个临时的内存文件，保存合成后的图片
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ob_start();
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imagepng($backgroundImage); // 输出图像为PNG格式
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$imageData = ob_get_contents();
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ob_end_clean();
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// 释放图像资源
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imagedestroy($backgroundImage);
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imagedestroy($qrImageResource);
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// 返回合成后的图片的字节数据
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return $imageData;
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}
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} |