生成小程序页面二维码的PHP代码

require_once 'phpqrcode.php'; // 引入QRcode类文件

function generateQRCode($page, $width = 150, $margin = 2) {
    $appid = 'your_appid'; // 小程序的AppID
    $secret = 'your_app_secret'; // 小程序的AppSecret

    // 获取小程序access_token
    $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={$appid}&secret={$secret}";
    $result = file_get_contents($url);
    $resultObj = json_decode($result);
    $access_token = $resultObj->access_token;

    // 生成小程序码
    $url = "https://api.weixin.qq.com/wxa/getwxacode?access_token={$access_token}";
    $postData = json_encode([
        'path' => $page,
        'width' => $width,
        'auto_color' => false,
        'line_color' => ['r' => 0, 'g' => 0, 'b' => 0],
        'is_hyaline' => false
    ]);

    $opts = [
        'http' => [
            'method' => 'POST',
            'header' => 'Content-type:application/json',
            'content' => $postData
        ]
    ];

    $context = stream_context_create($opts);
    $result = file_get_contents($url, false, $context);

    // 保存为图片文件
    $filename = 'qrcode.png';
    file_put_contents($filename, $result);

    // 生成带logo的二维码
    $logo = 'logo.png'; // logo图片路径
    $output = 'output.png'; // 输出图片路径
    QRcode::png($filename, $output, QR_ECLEVEL_L, $width, $margin);
    $QR = imagecreatefromstring(file_get_contents($output));
    $logo = imagecreatefromstring(file_get_contents($logo));
    $QR_width = imagesx($QR);
    $QR_height = imagesy($QR);
    $logo_width = imagesx($logo);
    $logo_height = imagesy($logo);
    $logo_qr_width = $QR_width / 5;
    $scale = $logo_width / $logo_qr_width;
    $logo_qr_height = $logo_height / $scale;
    $from_width = ($QR_width - $logo_qr_width) / 2;
    imagecopyresampled($QR, $logo, $from_width, $from_width, 0, 0, $logo_qr_width,
        $logo_qr_height, $logo_width, $logo_height);
    imagepng($QR, $output);
    imagedestroy($QR);

    return $output;
}

// 调用方法生成二维码
$page = '/pages/index/index'; // 小程序页面路径
$width = 150; // 二维码宽度
$margin = 2; // 二维码边距
$qrCode = generateQRCode($page, $width, $margin);

echo '<img src="' . $qrCode . '" alt="小程序二维码">';