决定尝试一下新发布的CI4。
Ubuntu操作系统与php 7.4.3。
以下文档位于https://codeigniter4.github.io/userguide/installation/index.html
composer create-project codeigniter4/appstarter c400
cd c400
# Not sure if this is needed
php builds development
composer update # per the build's output
php spark serve
结果是：
CodeIgniter CLI Tool - Version 4.0.1 - Server-Time: 2020-02-24 10:41:36am
PHP Fatal error: Cannot declare class CodeIgniterCommandsCommandsTestStreamFilter, because the name is already in use in /home/ahundiak/zayso2020/c400/tests/_support/Commands/CommandsTestStreamFilter.php on line 3
PHP Stack trace:
PHP 1. {main}() /home/ahundiak/zayso2020/c400/spark:0
PHP 2. CodeIgniterCLIConsole->run() /home/ahundiak/zayso2020/c400/spark:57
PHP 3. CodeIgniterCodeIgniter->run() /home/ahundiak/zayso2020/c400/vendor/codeigniter4/codeigniter4/system/CLI/Console.php:86
PHP 4. CodeIgniterCodeIgniter->handleRequest() /home/ahundiak/zayso2020/c400/vendor/codeigniter4/codeigniter4/system/CodeIgniter.php:306
PHP 5. CodeIgniterCodeIgniter->runController() /home/ahundiak/zayso2020/c400/vendor/codeigniter4/codeigniter4/system/CodeIgniter.php:398
PHP 6. CodeIgniterCLICommandRunner->_remap() /home/ahundiak/zayso2020/c400/vendor/codeigniter4/codeigniter4/system/CodeIgniter.php:906
PHP 7. CodeIgniterCLICommandRunner->index() /home/ahundiak/zayso2020/c400/vendor/codeigniter4/codeigniter4/system/CLI/CommandRunner.php:86
PHP 8. CodeIgniterCLICommandRunner->createCommandList() /home/ahundiak/zayso2020/c400/vendor/codeigniter4/codeigniter4/system/CLI/CommandRunner.php:103
PHP 9. class_exists() /home/ahundiak/zayso2020/c400/vendor/codeigniter4/codeigniter4/system/CLI/CommandRunner.php:167
PHP 10. spl_autoload_call() /home/ahundiak/zayso2020/c400/vendor/codeigniter4/codeigniter4/system/CLI/CommandRunner.php:167
PHP 11. ComposerAutoloadClassLoader->loadClass() /home/ahundiak/zayso2020/c400/vendor/codeigniter4/codeigniter4/system/CLI/CommandRunner.php:167
PHP 12. ComposerAutoloadincludeFile() /home/ahundiak/zayso2020/c400/vendor/composer/ClassLoader.php:322
PHP 13. include() /home/ahundiak/zayso2020/c400/vendor/composer/ClassLoader.php:444
An uncaught Exception was encountered
Type: ErrorException
Message: Cannot declare class CodeIgniterCommandsCommandsTestStreamFilter, because the name is already in use
Filename: /home/ahundiak/zayso2020/c400/tests/_support/Commands/CommandsTestStreamFilter.php
Line Number: 3
这个错误与Symfony在首次引入预加载时产生的一些错误没有什么不同。但7.4.3至少解决了Symfony的问题。
我开始逐步完成spark控制台代码，但我想看看是否有其他人遇到过这种情况。
更新：来自https://forum.codeigniter.com/thread-75587.html，看来这个问题正在解决中。当修复程序发布时，我会回来关闭它。
等待了几天才发布修复程序。做了一个composer更新，将我从CLI 4.0.1移到了4.0.2，但问题仍然存在。
做了一个新项目，一切如愿以偿。
不确定composer更新是否应该起作用，但至少现在显示了欢迎页面。