Matlab Basics Functions Sodium Sodium is one very simple PHP library which makes it easy to integrate any set of functions from the community. Sodium allows you to easily create functions with much less boilerplate. We create a list of all functions and then create our new function. For creating our code in Sodium, we create our package folder from this project and create a shortcut for that. Step 1: Import & Export the Code Open up your Sodium project and go to project directory under your php folder. Save your changes and press ‘Save As’ (If you have it in the main directory of PHP), as your file will be saved as /sodium/. Now take a look at the image below.