Laravel 6.x 直接升级到9

升级步骤：

1. 首先安装本地php8.1，因为laravel 9 版本要求；

2. 更改项目中composer.json文件

        2.1  "php"   =>      "php":"^8.1"

        2.2  "laravel/framework" => "laravel/framework":"^9.0"

        2.3  "laravel/tinker" => "laravel/tinker" => "^2.5"

        2.4  将 "facade/ignition" 替换成 "spatie/laravel-ignition": "^1.0"

        2.5 "nunomaduro/collision" => "nunomaduro/collision": "^6.1"

        2.6 检查 phpunit/phpunit 设置成 "^8.5"

3. 代码中的调整：

        3.1 app/Exceptions/Handler.php中：(report 和 render 方法的参数)

                将 Exception $exception 替换成 Exception|\Throwable $exception

        3.2  app/Http/Middleware/TrustProxies中：

               3.2.1 use Fideloper\Proxy\TrustProxies as Middleware;

                =>

                 use Illuminate\Http\Middleware\TrustProxies as Middleware;

                3.2.2 protected $headers = Request::HEADER_X_FORWARDED_ALL;

                => 

                    protected $headers =
        Request::HEADER_X_FORWARDED_FOR |
        Request::HEADER_X_FORWARDED_HOST |
        Request::HEADER_X_FORWARDED_PORT |
        Request::HEADER_X_FORWARDED_PROTO |
        Request::HEADER_X_FORWARDED_AWS_ELB;
 

参考文案：升级指南 - laravel9