qasimBlog/app/Rules/ImgYzmRule.php

<?php

namespace App\Rules;

use Illuminate\Contracts\Validation\Rule;
use Txj\Yzm\TxjYzm;

/**
 * 验证 图形验证码
 */
class ImgYzmRule implements Rule
{
    protected string $table;
    protected string $siteAliasName;
    protected ?string $params;
    protected ?string $message;
    protected string $attribute;

    /**
     * Create a new rule instance.
     *
     * @return void
     */
    public function __construct(string $table, array $ruleValue = [], $siteAliasName = '')
    {
        $this->table = $table; // 当前的集合表
        $this->siteAliasName = $siteAliasName; // 站点别名

        $this->params = (isset($ruleValue['params']) && !empty($ruleValue['params'])) ? $ruleValue['params'] : '';
        $this->message = (isset($ruleValue['error_msg']) && !empty($ruleValue['error_msg'])) ? $ruleValue['error_msg'] : '';
    }

    /**
     * Determine if the validation rule passes.
     *
     * @param  $attribute
     * @param mixed $value
     * @return bool
     */
    public function passes($attribute, $value): bool
    {
        $yzm = new TxjYzm($this->siteAliasName);

        $flag = $yzm->checkImgYzm($value); // true 验证正确
        if ($flag) {
            // 验证成功，则清除验证码缓存
            // todo
            $yzm->clearImgYzm();
        }

        return $flag;
    }

    /**
     * Get the validation error message.
     *
     * @return string|null
     */
    public function message(): ?string
    {
        return $this->message ?: '验证码不正确！';
    }
}