Creating a PrestaShop module
A PrestaShop module consists of: A root folder, named after the module, which will hold all of the module's files, and will reside in PrestaShop's /modules folder. A main PHP file, named after the module, located in that root folder. This PHP file should have the same name as its root folder. An icon file, named logo.gif, representing this module. Optional: some .tpl files, containing the module's theme. Optional: language files, if the module or its theme have text to display (and therefore, that should be translatable). Optional: in a /themes/modules folder, a folder with the same name as the module, containing .tpl and language files if necessary. This last folder is essential during modifications of existing module, so that you can adapt it without having to touch its original files. Notably, it enables you to handle the module's display in various ways, according to the current theme. Now I am going to create a module named Testmodule. Your module can b...