李建琦
eae151fd57
- 源码: xhadmincn/FastMovieAI (Apache 2.0) - 二开: Docker部署, Swoole改Select, route.php修复, 补update/VERSION - vendor/示例资源已gitignore
110 lines
2.9 KiB
PHP
110 lines
2.9 KiB
PHP
<?php
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namespace app\expose\helper;
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use Exception;
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use support\Response;
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use Webman\Captcha\CaptchaBuilder;
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/**
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* 图像验证码助手类
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* Class Captcha
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* @package app\helper
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*
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* @method static Response captcha()
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* @method static array captchaCode()
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* @method static bool check(string $captcha)
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*
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*/
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class Captcha
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{
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/**
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* 检验图像验证码
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* @param string $captcha
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* @return boolean
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*/
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public static function check(string $captcha, ?string $token = null): bool
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{
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$request = request();
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if ($token) {
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$request->sessionId($token);
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}
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$captchaData = $request->session()->get('captcha');
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if (!$captchaData) {
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throw new Exception('图像验证码不存在');
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}
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if ($captchaData['expire'] < time()) {
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throw new Exception('图像验证码已过期');
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}
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// 对比session中的captcha值
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if (strtolower($captcha) !== $captchaData['captcha']) {
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throw new Exception('图像验证码不正确');
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}
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return true;
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}
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public static function create()
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{
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$request = request();
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$bg = $request->get('bg');
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$length = $request->get('length', 4);
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if ($length < 4) {
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$length = 4;
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}
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if ($length > 6) {
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$length = 6;
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}
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$defaultBg = '255,255,255';
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if ($bg) {
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$defaultBg = $bg;
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}
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$width = (int)$request->get('w', 150);
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$height = (int)$request->get('h', 40);
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// 初始化验证码类
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$builder = new CaptchaBuilder((int)$length);
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$bgArr = explode(',', $defaultBg);
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$builder->setBackgroundColor($bgArr[0], $bgArr[1], $bgArr[2]);
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$builder->setDistortion(false);
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$builder->setInterpolation(false);
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$builder->setTextColor(255 - $bgArr[0], 255 - $bgArr[1], 255 - $bgArr[2]);
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// 生成验证码
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$builder->build($width, $height);
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return $builder;
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}
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/**
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* 生成图像验证码
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* @return Response
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*/
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public static function captcha(): Response
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{
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$request = request();
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$builder = self::create();
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$request->session()->set('captcha', [
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'captcha' => strtolower($builder->getPhrase()),
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'expire' => time() + 60 * 5
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]);
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$img_content = $builder->inline();
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return response($img_content, 200);
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}
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/**
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* 图像验证码
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*/
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public static function captchaCode(): array
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{
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$request = request();
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$builder = self::create();
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$request->session()->set('captcha', [
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'captcha' => strtolower($builder->getPhrase()),
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'expire' => time() + 60 * 5
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]);
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$img_content = $builder->inline();
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return ['base64' => $img_content, 'token' => $request->sessionId()];
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}
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}
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