What Should A Junior Php Developer Know

PHP Programming

As a junior PHP developer, there are a few key areas of knowledge that I believe are essential for success in this role. In this article, I will share my personal insights and provide detailed information on what a junior PHP developer should know.

Understanding the Basics

First and foremost, it is important for a junior PHP developer to have a strong foundation in the basics of PHP programming. This includes understanding variables, data types, operators, and control structures. Familiarity with functions, arrays, and loops is also crucial.

Additionally, a junior PHP developer should be proficient in using PHP’s built-in functions and have a good understanding of object-oriented programming (OOP) concepts. These skills form the core of PHP development and will lay the groundwork for more advanced topics.

Working with Databases

A solid understanding of database management is essential for any PHP developer. Juniors should be knowledgeable about SQL and how to interact with databases using PHP. This includes writing queries, creating tables, and performing CRUD operations.

Furthermore, it is crucial for junior PHP developers to learn about database normalization, indexing, and query optimization techniques. These skills will ensure that applications perform well and can efficiently handle large amounts of data.

MVC Frameworks

One area where junior PHP developers can really level up their skills is by learning about Model-View-Controller (MVC) frameworks. Popular PHP frameworks like Laravel, Symfony, and CodeIgniter can greatly simplify development and help organize code in a more maintainable way.

By becoming proficient in at least one MVC framework, junior PHP developers can learn about concepts such as routing, controllers, models, and views. They can also take advantage of built-in features like ORM (Object-Relational Mapping), authentication, and validation.

Security Best Practices

Another essential aspect of PHP development is understanding security best practices. Junior developers must be aware of common security vulnerabilities such as SQL injection, cross-site scripting (XSS), and cross-site request forgery (CSRF).

Learning how to sanitize user inputs, validate form data, and implement secure authentication and authorization mechanisms should be a priority for junior PHP developers. Staying updated on the latest security threats and best practices is also important in order to protect applications from potential attacks.

Version Control and Collaboration

Lastly, junior PHP developers should learn how to use version control systems like Git. This allows for better collaboration with other developers and provides a way to track changes, manage branches, and easily revert code when needed.

Working in a team environment and following coding standards is an important skill for any developer. Junior PHP developers should familiarize themselves with common coding conventions, documentation practices, and participate in code reviews to improve their skills and learn from more experienced team members.


Being a junior PHP developer involves more than just writing code. It requires a solid understanding of the fundamentals, knowledge of databases and MVC frameworks, a focus on security, and the ability to collaborate effectively.

By continuously learning and expanding their skill set, junior PHP developers can grow into experienced developers who can create robust and secure applications. So, if you’re embarking on the journey of becoming a junior PHP developer, remember to build a strong foundation, embrace new technologies, and never stop learning.