Laravel-compact():未定义的变量:Builder.php中的运算符 [英] Laravel - compact(): Undefined variable: operator in Builder.php

问题描述

我的系统中安装了PHP版本7.3，而Laravel-5.8中安装了PHP版本.当我尝试在使用Laravel-5.4和PHP Version-5.6.4的旧项目上摩擦composer安装或composer更新时，出现以下错误:

I have PHP version-7.3 installed in my system and Laravel-5.8. When I tried to rub composer install or composer update on an old Project with Laravel-5.4 and PHP Version-5.6.4, I got this error shown below:

在Builder.php第1229行中:compact():未定义变量:运算符脚本php artisan优化处理错误代码为1的返回的post-install-cmd事件

In Builder.php line 1229: compact(): Undefined variable: operator Script php artisan optimize handling the post-install-cmd event returned with error code 1

然后，当我尝试运行该应用程序时，出现了此错误页面，如屏幕上所示:

Then, when I tried to run the application, I got this error page as shown on the screen:

我试图跑步:

php artisan cache:clear

php artisan cache:clear

和

作曲家更新

但是问题仍然存在.

如何解决?

谢谢.

推荐答案

根据此信息，看来此问题已在Laravel 5.5中修复: https://github.com/laravel/framework/issues/26936#issuecomment-449479336

It looks like this issue was fixed in Laravel 5.5 according to this post: https://github.com/laravel/framework/issues/26936#issuecomment-449479336

由于不再支持Laravel 5.4，因此最好的选择是升级.您可以在此处找到当前受支持的版本的列表: https://laravel.com/docs/releases

Since Laravel 5.4 is no longer supported, your best option might be to upgrade. You can find a list of the currently supported versions here: https://laravel.com/docs/releases

仍应修复该错误的最小升级为5.4到5.5.可以在这里找到说明: https://laravel.com/docs/5.5/upgrade#upgrade-5.5.0 (请注意，对5.5的支持也已终止，但仍可能会解决您的错误).这还需要您将项目切换到PHP 7.0.0或更高版本.

The minimal upgrade that should still fix the error would be 5.4 to 5.5. The instructions can be found here: https://laravel.com/docs/5.5/upgrade#upgrade-5.5.0 (please note that support for 5.5 has also ended, but it might still fix your bug). This would also require you to switch the project to PHP 7.0.0 or greater.

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