Fixing Laravel Fatal Error: Allowed Memory Size Exhausted Despite memory_limit Set to 2048MB

Discover how to resolve the Laravel memory limit issue causing fatal errors, even after setting the memory limit to `2048MB`. Learn the steps to rectify misconfigurations and get back on track.
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This video is based on the question https://stackoverflow.com/q/71077469/ asked by the user 'calvincani' ( https://stackoverflow.com/u/13726750/ ) and on the answer https://stackoverflow.com/a/71078482/ provided by the user 'Nico Haase' ( https://stackoverflow.com/u/1116230/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Understanding the Laravel Memory Limit Issue

If you are setting up a new Laravel 8 project and encountering the Fatal Error: Allowed memory size exhausted, you are not alone. Many developers face this issue when trying to run Laravel commands or Composer, even after ensuring that the memory_limit is set to a seemingly generous 2048MB. Inevitably, questions arise:

Why is the memory limit reported as only 2MB?

What steps can I take to resolve this issue efficiently?

Let’s dive deep into understanding and fixing this memory limit problem.

Diagnosing the Problem

Upon running commands like laravel --version or even just composer, you may see errors such as:

[[See Video to Reveal this Text or Code Snippet]]

You might have checked the current memory limit using the command:

[[See Video to Reveal this Text or Code Snippet]]

And you see the output shows 2048MB, but despite this, Composer seems to be treating your limit as only 2MB.

Key Questions

Where does this discrepancy come from?

How do I fix this issue?

The Solution: Fixing the Memory Limit Misconfiguration

1. Understanding PHP Memory Limit Notation

To tackle this issue, it is crucial to understand how PHP interprets the memory limit setting. In PHP configuration, the memory_limit should not have a trailing 'B' for bytes. This subtlety can often lead to confusion.

Correct Notation: 2048M (instead of 2048MB)

2. Steps to Modify the Memory Limit

Follow these steps to rectify the memory limit configuration:

Locate your php.ini file: This configuration file determines how PHP runs. You can find its location by executing the command:

[[See Video to Reveal this Text or Code Snippet]]

Open the php.ini file: Use a text editor to make the changes, for example:

[[See Video to Reveal this Text or Code Snippet]]

Modify the Memory Limit: Search for the line that defines memory_limit and update it:

[[See Video to Reveal this Text or Code Snippet]]

3. Restart Your Web Server or PHP Process

After making changes to your php.ini file, it's essential to restart the web server or PHP process to make sure the changes take effect. You can do this as follows, depending on your setup:

For Apache:

[[See Video to Reveal this Text or Code Snippet]]

For Nginx:

[[See Video to Reveal this Text or Code Snippet]]

For PHP-FPM:

[[See Video to Reveal this Text or Code Snippet]]

4. Verify the New Memory Limit

Once you’ve made your changes and restarted the server, check the memory limit again with:

[[See Video to Reveal this Text or Code Snippet]]

You should see the output reflecting 2048M without any errors.

Conclusion

While encountering a memory limit error can be frustrating, it’s often a simple misconfiguration that can lead to solutions. By ensuring your memory_limit is properly set to 2048M (and not 2048MB), you can resolve the fatal errors in your Laravel project effectively.

If you follow these steps, you should be able to run Laravel and Composer commands without any issues. Happy coding!

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