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Directory :  /www/wwwroot/dzynews.com/wp-content/themes/archive-document/Modules/Common/

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Current File : /www/wwwroot/dzynews.com/wp-content/themes/archive-document/Modules/Common//Recaptcha.php
<?php
namespace B2\Modules\Common;

use \Firebase\JWT\JWT;

use Gregwar\Captcha\CaptchaBuilder;

class Recaptcha
{

    public static function code_letter($num, $width, $height){
        // 1. 创建验证码实例
        $builder = new CaptchaBuilder;
        $builder->build(186, 50);  

        // 2. 获取验证码文本
        $captchaPhrase = $builder->getPhrase();

        // 3. 获取Base64编码的图片
        $captchaImageBase64 = $builder->inline();

        // 4. 如果需要纯Base64数据（不带data:image/jpeg;base64,前缀）
        $pureBase64 = explode(',', $captchaImageBase64)[1];

        //加密验证码
        $issuedAt = time();
        $expire = $issuedAt + 180;

        $token = array(
            "iss" => B2_HOME_URI,
            "iat" => $issuedAt,
            "nbf" => $issuedAt,
            'exp' => $expire,
            'data' => array(
                'value' => md5(md5(AUTH_KEY . strtolower($captchaPhrase)))
            )
        );

        try {
            $jwt = JWT::encode($token, AUTH_KEY);
        } catch (\Throwable $th) {
            wp_die(__('请正确安装jwt插件', 'b2'));
        }

        return [
            'token' => $jwt,
            'base' => 'data:image/png;base64,' . $pureBase64
        ];
    }

    // public static function code_letter($num, $width, $height)
    // {

    //     //字体路径
    //     $font_address = B2_THEME_DIR . DIRECTORY_SEPARATOR . 'Assets' . DIRECTORY_SEPARATOR . 'fonts' . DIRECTORY_SEPARATOR . rand(1, 8) . '.ttf';//字体文件地址

    //     //生成背景
    //     $image = imagecreatetruecolor($width, $height);
    //     imagefill($image, 0, 0, imagecolorallocate($image, rand(200, 255), rand(200, 255), rand(200, 255)));//区域填充

    //     $value = '';
    //     $data = "ABCDEFGHJKMNPQRSTUVWXYZ1234567890";
    //     for ($i = 0; $i < $num; $i++) {
    //         $fontsize = $width > 300 ? 80 : 40;
    //         $fontcolor = imagecolorallocate($image, 132, 132, 132);//0,120是代表随机的深色颜色
    //         $fontcontent = substr($data, rand(0, strlen($data) - 1), 1);
    //         $value .= $fontcontent;
    //         $x = $i * $width / $num + ($width > 300 ? 20 : 10);//x坐标
    //         $y = ($height / 2) + ($fontsize / 2);
    //         $anger = 0;
    //         ImageTTFText($image, $fontsize, $anger, (int)$x, (int)$y, $fontcolor, $font_address, $fontcontent);
    //     }

    //     //转换成 base64
    //     ob_start();

    //     imagejpeg($image);
    //     $image_data = ob_get_contents();

    //     ob_end_clean();
    //     ob_end_flush();
    //     $image_data_base64 = base64_encode($image_data);

    //     //加密验证码
    //     $issuedAt = time();
    //     $expire = $issuedAt + 180;

    //     $token = array(
    //         "iss" => B2_HOME_URI,
    //         "iat" => $issuedAt,
    //         "nbf" => $issuedAt,
    //         'exp' => $expire,
    //         'data' => array(
    //             'value' => md5(md5(AUTH_KEY . strtolower($value)))
    //         )
    //     );

    //     try {
    //         $jwt = JWT::encode($token, AUTH_KEY);
    //     } catch (\Throwable $th) {
    //         wp_die(__('请正确安装jwt插件', 'b2'));
    //     }

    //     return array(
    //         'token' => $jwt,
    //         'base' => 'data:image/png;base64,' . $image_data_base64
    //     );
    // }
}

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