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Is Facebook built on PHP?

User: Hey everyone! I'm new to web development and I've been curious about the technology behind popular websites like Facebook. I recently came across an article that mentioned Facebook being built on PHP. Is that true? I've heard about PHP being a popular language for web development, but I'm not sure if it's really used by big players like Facebook. Can anyone shed some light on this and confirm whether Facebook is indeed built on PHP? Any insights would be greatly appreciated! Thanks in advance.

All Replies


User 1: Hi there! Yes, I can confirm that Facebook is indeed primarily built on PHP. Although it may seem surprising, PHP has been the backbone of Facebook's development for a long time. It has been heavily optimized and customized to handle the massive scale of users and data that Facebook deals with every day. The use of PHP, along with other technologies and frameworks, has allowed Facebook to create a fast and dynamic platform. So, don't underestimate the power of PHP when it comes to building large-scale applications like Facebook!

User 2: That's correct! I've been working as a web developer for several years, and I can vouch for the fact that Facebook is built on PHP. In fact, PHP has been a popular choice for developing dynamic web applications for quite some time. Facebook has contributed significantly to the PHP ecosystem, developing their own extensions and tools to enhance the performance and scalability of PHP. So, if you're interested in web development and PHP, studying how Facebook has utilized PHP might provide you with some valuable insights into building robust web applications.

User 3: Absolutely! As a software engineer who has worked on PHP projects, I can confirm that Facebook is one of the most prominent examples of a large-scale application built using PHP. However, it's worth noting that Facebook's backend infrastructure is not solely based on PHP. They have adopted various technologies such as Hack, a programming language built on top of PHP, to further optimize performance and maintainability. Additionally, Facebook has developed their own runtime, the HipHop Virtual Machine (HHVM), specifically designed to execute PHP code efficiently. So, while PHP plays a crucial role in Facebook's development, it's not the only technology in their stack.

User 4: Greetings! I just wanted to add to the discussion that while Facebook started with PHP, they have gradually moved towards a more diversified tech stack over time. Initially, PHP was chosen for its simplicity and ease of development, but as the platform grew, the need for higher performance and flexibility emerged. As a result, Facebook has developed and integrated different technologies alongside PHP, such as React, GraphQL, and other proprietary solutions. So, while the early foundations were indeed based on PHP, Facebook has evolved into a more complex ecosystem with a broader range of technologies working together.


User 5: Hey everyone! I just wanted to share my personal experience regarding this topic. As a web developer, I've had the opportunity to work with PHP on various projects, but I haven't had direct involvement with Facebook's development. However, what I can say is that Facebook's early reliance on PHP was a significant milestone for the language itself. The immense challenges that Facebook faced in terms of scalability and performance have driven PHP's evolution and sparked the development of tools and optimizations, benefiting the entire PHP community. So, even if you don't work on a project as massive as Facebook, studying how they leveraged PHP could still provide valuable insights for your own web development journey.

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