解決辦法：

$ sudo ln -s /Applications/XAMPP/bin/php /usr/local/bin

$ php -v

PHP 8.2.0 (cli) (built: Dec 29 2022 08:42:31) (NTS)

PHP &?VS Code

在setting.json文件中添加:

"php.validate.executablePath": "/usr/local/bin/php"