Detailed explanation of how to implement rotated image verification in PHP

This article brings you relevant knowledge about PHP. It mainly introduces how PHP implements rotation image verification. Let’s take a look at it together. I hope it will be helpful to everyone.

Installation

composer require kkokk/poster

Update

composer update kkokk/poster

Use documentation

Open source repository:
gitee documentation
github document

    use Kkokk\Poster\PosterManager;
    use Kkokk\Poster\Exception\PosterException;

    try {
        # 旋转图片自定义参数
        $params = [
            'src'           => '',  // 背景图片，尺寸 350 * 350 正方形都可
            'im_width'      => 350, // 画布宽度
            'im_height'     => 350, // 画布高度
        ];

        $type = 'rotate';

        /**
          * 获取验证参数
          * 内部使用了 laravel 的 cache 缓存，返回的是图片的 base64 、 缓存key
          * @param string $type   验证码类型
          * @param array  $params 验证码自定义参数
          * @return arary
          */
        $data = PosterManager::Captcha()->type($type)->config($params)->get();

        /**
          * 验证
          * 前端根据相关Detailed explanation of how to implement rotated image verification in PHP操作进行处理, 返回旋转角度，返回 true 则验证成功
          * @param string     $key     缓存key
          * @param string|int $value   前端传回来的旋转角度
          * @param int        $leeway  误差值
          * @return boolean
          */
        $res = PosterManager::Captcha()->type($type)->check($key, $value, $leeway);

    } catch (PosterException $e) {
        print_r($e->getMessage())
    }

Example

ui imitation Baidu statistics

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