Coding⏱️ 2 min read📅 2026-05-31

How to Fix: PHP Fatal error: Cannot redeclare class

PHP Fatal error: Cannot redeclare class occurs when a class is defined multiple times in the same script or across different files.

Quick Answer: Check for duplicate class definitions, ensure each file has a unique namespace, and remove any redundant class declarations.

📋 Table of Contents

  1. 💡 Why You Are Getting This Error
  2. 🚀 How to Resolve This Issue
  3. 💡 Conclusion

The PHP Fatal error: Cannot redeclare class is a common issue that occurs when you try to create multiple classes with the same name in your PHP script. This can happen due to several reasons, such as:

💡 Why You Are Getting This Error

  • [Cause]

🚀 How to Resolve This Issue

Method 1: Renaming the Class

  1. Step 1: Check your code for any duplicate class names and rename them to unique names.

Method 2: Using a Different Namespace

  1. Step 1: Check if you are using the same namespace for multiple classes and consider using a different namespace.

💡 Conclusion

By following these steps, you can resolve the PHP Fatal error: Cannot redeclare class and ensure your code is running smoothly.

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