The list of supported PHP versions can vary depending on factors such as the operating system, hosting provider, and the specific software you're using. However, I can provide you with a list of some commonly supported PHP versions:

1. PHP 7.0 (End of Life as of December 3, 2018)
2. PHP 7.1 (End of Life as of December 1, 2019)
3. PHP 7.2 (End of Life as of November 30, 2020)
4. PHP 7.3 (End of Life as of December 6, 2021)
5. PHP 7.4 (End of Life as of November 28, 2022)
6. PHP 8.0
7. PHP 8.1 (Starting from November 25, 2021)

Please note that PHP versions have specific end-of-life dates, and it's generally recommended to use the latest supported version for security and performance reasons. Also, the availability of PHP versions can depend on your hosting environment or server configuration.

To get the most up-to-date information on supported PHP versions for your specific platform or hosting provider, it's best to refer to their official documentation or contact their support team. Additionally, PHP versions may have received updates or reached end-of-life since my last knowledge update in September 2021, so it's important to stay informed about the latest developments in the PHP ecosystem.