Opencart is one of the most popular open source e-commerce CMS used by merchants to sell their products online. It uses PHP and follows the MVC(Model-View-Controller) structure. On 24th May 2022, opencart version 4.0.0.0 was released. It majorly seems like opencart 3.x.x.x but some major changes are introduced within this release which is listed below: Opencart-4 Requirement Changes: PHP version: 4.0.0.0 supports the PHP version 8.0+. PHP extensions: For 4.0.0.0 below PHP extensions are needed: Database, GD, cURL, OpenSSL, ZLIB, ZIP Opencart-4 Admin Changes: Toggled checkboxes & radio buttons: In opencart-4 checkboxes & radio buttons are toggled which looks more beautiful compared to earlier versions. Brighter Icons & Buttons: Icons & Buttons are more clear & bright in opencart-4 in comparison to previous versions. “admin” directory rename option: “admin” directory rename option is available in the latest version(4) of opencart. It provides more security to y