Wordpress developers must be conversant not only with existing tools, but also with creating content for the platform. They can thus customize plugins and modules by mastering:

• HTML (Hypertext Markup Language): This fundamental language is powerful and relatively simple to learn. It is a series of markup symbols or codes specifying how documents are displayed in a web browser.

Every HTML document is a set of tags (also known as elements). It generates a tree-like structure containing headings, sections, paragraphs, and other content blocks. Almost all HTML elements have an opening tag and a closing tag with the structure.

• CSS (Cascading Style Sheets): While HTML formats elements on a website, CSS enhances and highlights those elements by decorating, changing the font, adding color, changing the site layout, and controlling other stylistic facets.

For example, if the element is centered and the text is red, the declaration will be: p { color: red; text-align: center; }.

• PHP (Personal Home Page): It is a scripting language created for server-side communications. Therefore, it can handle server-side functions like collecting form data, managing files on the server, modifying the database and much more.

Fortunately, there are a lot of free online PHP courses, which will help WordPress developers upgrade their skills.

• MySQL (My Sequel): MySQL is an open-source database management system (abbreviated RDBMS) that supports data storage and retrieval across multiple storage engines.

It can also perform data replication and table partitioning to improve performance and durability. Most importantly, WordPress uses PHP to retrieve and store data from MySQL databases.

MySQL allows WordPress to support important site administration features such as user roles. Therefore, WordPress developers should get the hang of this software.