In PrestaShop, the _PS_VERSION_ constant is defined in the config/defines.inc.php file, which is located in the root directory of your PrestaShop installation. This constant stores the version number of the PrestaShop software you are using.
The definition of _PS_VERSION_ typically looks like this:
php
define('_PS_VERSION_', '1.7.8.2');
The actual version number may vary depending on the version of PrestaShop you have installed.
You can find the version of your PrestaShop installation by looking for this constant in the defines.inc.php file or by checking the “Back Office” (admin panel) of your PrestaShop store, as the version number is often displayed there as well. It’s essential to know your PrestaShop version for compatibility, support, and security reasons.
