neiyou_user_web/app/Http/Middleware/isSecurity.php

<?php

namespace App\Http\Middleware;

use Cache;
use Closure;
use Log;

class isSecurity {
	/**
	 * 是否需要安全码才访问(仅用于登录页)
	 *
	 * @param           $request
	 * @param  Closure  $next
	 *
	 * @return mixed
	 */
	public function handle($request, Closure $next) {
		$ip = getClientIP();
		$code = $request->securityCode;
		$cacheKey = 'SecurityLogin_'.ip2long($ip);
		$websiteSecurityCode = sysConfig('website_security_code');

		if($websiteSecurityCode && !Cache::has($cacheKey)){
			if($code != $websiteSecurityCode){
				Log::info("拒绝非安全入口访问(".$ip.")");

				return response()->view('auth.error', [
					'message' => trans('error.SecurityError').', '.trans('error.Visit').'<a href="/login?securityCode=" target="_self">'.trans('error.SecurityEnter').'</a>'
				]);
			}

			Cache::put($cacheKey, $ip, 7200); // 2小时之内无需再次输入安全码访问
		}

		return $next($request);
	}
}