Why is my WordPress import failing with a \'PHP Warning: POST Content-Length Exceeded\' error?

Troubleshooting PHP Warning: Exceeding POST Content-Length Limit

The error message "PHP Warning: POST Content-Length of 8978294 bytes exceeds the limit of 8388608 bytes" indicates an issue when uploading an import on WordPress within a local XAMPP dev environment. This error occurs when the size of the uploaded file exceeds the maximum allowed limit.

Solution:

To resolve this issue, the post_max_size value in php.ini must be increased to a larger value. This setting defines the maximum amount of data that can be sent via a POST in a form. It is distinct from the upload_max_filesize setting, which sets the maximum size of a single file that a user can upload.

In this case, 8388608 bytes is equivalent to 8 megabytes, which is the default limit in PHP. The upload_max_filesize had been increased to 1000M, which is equal to 1 gigabyte. However, this configuration is insufficient to address the issue because it sets the maximum file size for a single file, not the total data size of the POST request.

To fix the error, follow these steps:

1. Open the php.ini file located in the PHP installation directory.
2. Search for the post_max_size directive.
3. Increase the value to a larger amount, such as 128M or 256M.
4. Save the file and restart the server to apply the changes.

By adjusting the post_max_size setting, the maximum size of the POST request is increased, allowing for larger uploads. Once the server is restarted, the import process should proceed without encountering the error.

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