48 lines
1.2 KiB
PHP
48 lines
1.2 KiB
PHP
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<?php
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declare (strict_types=1);
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namespace app\service\util;
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use think\captcha\facade\Captcha;
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/**
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* @author canny
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* @date 2024/1/3 16:06
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**/
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class CaptchaUtil
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{
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const CAPTCHA_CACHE_KEY = 'captcha:';
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const CACHE_TTL = 1800;
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public static function create($sceneConfig = ''): array
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{
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$res = Captcha::create($sceneConfig);
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$base64Image = 'data:image/png;base64,' . base64_encode($res->getData());
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$key = session('captcha.key');
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$uuid = uniqid();
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RedisService::getRedisInstance()->set(self::getKey($uuid), $key, 'ex', self::CACHE_TTL);
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return ['uuid' => $uuid, 'img' => $base64Image];
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}
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public static function check($uuid, $code): bool
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{
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$redis = RedisService::getRedisInstance();
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$key = $redis->get(self::getKey($uuid));
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if (empty($key)) {
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return false;
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}
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$code = mb_strtolower($code, 'UTF-8');
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$res = password_verify($code, $key);
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if ($res) {
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$redis->del(self::getKey($uuid));
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}
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return $res;
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}
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private static function getKey($uuid): string
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{
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return self::CAPTCHA_CACHE_KEY . $uuid;
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}
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}
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