How to Fix the \'PHP Warning: POST Content-Length Exceeds Limit\' Error in WordPress?

Resolving "PHP Warning: POST Content-Length Exceeds Limit" Error

When encountering the error "Warning: POST Content-Length of 8978294 bytes exceeds the limit of 8388608 bytes in Unknown on line 0" while uploading an import in WordPress, it's crucial to examine the server configuration. By default, PHP sets a limit on the maximum amount of data that can be received via POST, which in this case is 8388608 bytes or 8M.

To resolve this issue, the server's post_max_size directive needs to be increased to a larger value. Contrary to upload_max_filesize, which sets the maximum size of individual uploaded files, post_max_size determines the maximum size of the entire POST request.

In the php.ini configuration file, locate the post_max_size directive and assign it a higher value. For instance, to set a limit of 100M, the directive would look like:

post_max_size = 100M

It's important to note that upload_max_filesize controls the maximum file size for individual uploads, while post_max_size limits the combined size of all uploads and other data submitted via POST.

After modifying the php.ini file, restart the server to apply the changes. Subsequently, the error will be resolved, enabling the successful upload of the import file.

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