What is Constant in PHP | PHP Constants Explained | PHP Tutorial 2026
🔥 What is Constant in PHP | PHP Constants Explained | PHP Tutorial 2026
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📌 ABOUT THIS VIDEO
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Welcome to this beginner-friendly PHP tutorial! In this video,
we explain What is a Constant in PHP in the simplest and easiest
way possible. You will learn how to define constants, rules of
naming constants, difference between constants and variables,
and how to use constants in real PHP programs — step by step
with clear examples.
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📚 TOPICS COVERED IN THIS VIDEO
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✅ What is a Constant in PHP?
✅ How to Define a Constant in PHP
✅ PHP Constant Naming Rules
✅ PHP define() Function
✅ PHP const Keyword
✅ Constant vs Variable Difference
✅ How to Use Constants in PHP
✅ Magic Constants in PHP
✅ Global Constants in PHP
✅ Checking if Constant is Defined
✅ Common Constant Mistakes in PHP
✅ Best Practices for Constants
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⏱️ CHAPTERS / TIMESTAMPS
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00:00 - Introduction & What We Will Learn
00:09 - What is a Constant in PHP?
02:45 - Why Use Constant
04:56 - How to create Constant
06:02 - Example
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🎯 WHO IS THIS VIDEO FOR?
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👉 Absolute beginners in PHP
👉 Students learning PHP from scratch
👉 Anyone confused about PHP constants
👉 Developers starting PHP development
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🏆 WHAT YOU WILL GAIN
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✔ Clear understanding of PHP constants
✔ Ability to define and use constants
✔ Know difference between constants & variables
✔ Strong foundation for PHP development
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