How to implement a Restricted Boltzmann Machine manually? [closed]

Question

I am learning about Restricted Boltzmann Machines and I'm so excited by the ability it gives us for unsupervised learning. The problem is that I do not know how to implement it using one of the programming languages I know without using libraries. I want to implement it manually, which means that I want to use native functionalities of a language as much as possible.

The programming languages I know are Java, C, PHP (my preferred language), JavaScript, R and Python. I am not familiar with TensorFlow or Scikit-Learn or similar stuff.

Thanks in advance