
Front end Controller file to make hello world – OpenCart Module Development
OpenCart identifies existing modules automatically, simply by reading the catalog/controller/extension/module folder. Any modules existing in this folder will automatically be loaded as per the active modules for the pages on the front end. Let’s start to create our hello world module by creating the file at admin/controller/extension/module and named it helloworld.php. Then follow the following [...]

Admin Language file to make hello world – OpenCart Module Development
Create a language file helloworld.php at "admin\language\en-gb\extension\module\", here en-Gb is the English language folder but if your store is multi-language then you have to create helloworld.php in another folder also like at "admin\language\OTHER_LANGUAGE_FOLDER\extension\module\". Now in helloworld.php, you will define variable that holds the text for that language. Starting defining a variable with $_['YOUR_VARIABLE_NAME'] and assign [...]