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webman:生成图形验证码(v1.5.7)

发布时间 2023-09-19 21:13:48作者: 刘宏缔的架构森林

一，官方文档地址:

1,文档

https://www.workerman.net/doc/webman/components/captcha.html

2,用到的库项目代码地址:

https://github.com/webman-php/captcha

二， 安装库:

1,用composer安装

liuhongdi@lhdpc:/data/webman/imageadmin$ composer require webman/captcha

2,查看所安装库的版本:

liuhongdi@lhdpc:/data/webman/imageadmin$ composer show webman/captcha
name     : webman/captcha
descrip. : Captcha generator
keywords : bot, captcha, spam
versions : * v1.0.2
…

三，php代码:

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<?php
namespace app\controller;
 
use support\Request;
use app\result\Result;
use support\Log;
use think\facade\Db;
use think\facade\Cache;
 
use Webman\Captcha\CaptchaBuilder;
use Webman\Captcha\PhraseBuilder;
 
use app\model\Comment as CommentModel;
 
class ImageController
{
 
    /**
     * 输出验证码图像
     */
    public function captcha(Request $request){
        // 验证码长度
        $length = 4;
        // 包含哪些字符
        $chars = '0123456789abcefghijklmnopqrstuvwxyz';
        $builder = new PhraseBuilder($length, $chars);
        $captcha = new CaptchaBuilder(null, $builder);
 
        // 生成验证码
        $captcha->build($width = 200, $height = 80, $font = null);
        // 将验证码的值存储到session中
        $request->session()->set('captcha', strtolower($captcha->getPhrase()));
        /*
         
        // base64 image
        $image = $captcha->inline();
        //json
        return json(['code' => 0, 'image'=>$image,'uniqid'=>'123']);
        */
        // 获得验证码图片二进制数据
        $img_content = $captcha->get();
        return response($img_content, 200, ['Content-Type' => 'image/jpeg']);
    }
 
    /**
     * 检查验证码
     */
    public function checkCaptcha(Request $request)
    {
        // 获取post请求中的captcha字段
        $captcha = $request->post('captcha');
        // 对比session中的captcha值
        if (strtolower($captcha) !== $request->session()->get('captcha')) {
            return json(['code' => 400, 'msg' => '输入的验证码不正确']);
        }
        return json(['code' => 0, 'msg' => 'ok']);
    }

说明：刘宏缔的架构森林—专注it技术的博客，
网站：https://blog.imgtouch.com
原文: https://blog.imgtouch.com/index.php/2023/09/19/webman-sheng-cheng-tu-xing-yan-zheng-ma/
代码: https://github.com/liuhongdi/ 或 https://gitee.com/liuhongdi
说明：作者:刘宏缔 邮箱: 371125307@qq.com

四，查看效果:

五，查看webman的版本:

liuhongdi@lhdpc:/data/webman/imageadmin$ composer show workerman/webman-framework
name     : workerman/webman-framework
descrip. : High performance HTTP Service Framework.
keywords : High Performance, http service
versions : * v1.5.7
...