We highly recommend that any website using UpStream also uses PHP 5.6.

You can see our official recommendations at the UpStream page on WordPress.org:

![image](https://support.kelsiem.com/rails/active_storage/blobs/redirect/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBBaWNPIiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--3780d3648bc4cc1028e319f7eb2fea521b8fcb5a/upstream.png)

Why PHP 5.6? Because PHP itself does not support anything lower than 5.6. [Click here for more details on PHP version support](https://secure.php.net/supported-versions.php). Any version of PHP before 5.6 doesn’t have security updates and will not keep your site safe.

[WordPress officially recommends that you use PHP 7](https://wordpress.org/about/requirements/).

## Does my site meet the PHP requirements?

If you are unsure of what version of PHP your site is using, you can go to Tools > Site Health to find out.

- After installing the Health Check plugin, go to Dashboard, then “Health Check”.
- Click the “Info” tab.
- You’ll find your PHP version under the “Server” tab:

![image](https://support.kelsiem.com/rails/active_storage/blobs/redirect/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBBakVQIiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--37e8bd8741cbe6d4e276cc88b0336317c2ba8d74/php-version-1024x320.png)![image](https://support.kelsiem.com/rails/active_storage/blobs/redirect/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBBakVQIiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--37e8bd8741cbe6d4e276cc88b0336317c2ba8d74/php-version-1024x320.png)Other recommendations**Database**: MySQL version 5.6 or greater or MariaDB version 10.0 or greater.**Server**: We recommend [Apache](https://httpd.apache.org/) or [Nginx](https://nginx.org/) as the most robust and secure server for running WordPress, but any server that supports PHP and MySQL will do.For the official WordPress recommendations, [please check here](https://wordpress.org/about/requirements/).