If you have WordPress installed on your Synology, surely you have wondered which of the php extensions you need to activate for it to work. Below is a short guide that explains what you need to activate. First of all, open the application called Web Station. Once opened, go to PHP settings and then EDIT. Follow the images. (The images and instructions below work for PHP 7.2 – 7.1 – 7.0 too, even though they are about PHP 7.3)
Once you click on Edit, the following screen will open:
PHP Settings: Set PHP version to 7.3. Leave PHP Cache enabled. Select only these extensions to make WordPress work smoothly:
Press the OK button.
Note: “mcrypt” PHP extension is no longer needed when using WordPress.