Seven days challenge to learn one new topic each day

So I decided to improve my skills as a developer. I’m going to do a 7 days challenge to learn the new topics that I always wanted to learn but couldn’t arrange the time to do so. This is the first 7 days. I’m going to learn the following topics:

Day 1: PHP Composer

Day 2: PHP Autoload

Day 3: PHP Namespace

Day 4: PHP Generators

Day 5: PHPUnit

Day 6: PHP Hashing

Day 7: WordPress Nonce

Here are the additional topics I would like to learn in later days:

• PHP namespaces
• Cross Site Request Forgery

At the end of each day, I’m going to summarize all the things I learned in one article.