Fix PHP Warning: POST Content-Length of 8978294 bytes exceeds the limit of 8388608 bytes in Unknown on line 0

This error is getting probably when you trying to upload an import on WordPress on your XAMPP local dev environment, right? Well, it doesn’t have to be just XAMPP – the same error can be in WAMP or somewhere else.

PHP warning is very simple. POST Content-Length of 8978294 bytes exceeds the limit of 8388608 bytes in Unknown on line 0 means that your default value of post_max_size is not enough. By default, the post_max_size variable is set to 8MB (in 90% of cases).

To fix this error you only must update your post_max_size in your php.ini to a larger value (and as well upload_max_filesize).

Full instructions:

1. Find the php.ini file 
   Xampp: C:\xampp\php or from xampp folder,
   Wamp: C:\wamp\bin\php\php_version\php.ini,
   Laragon: C:\laragon\bin\php
2. 2. Now open php.ini file and change the following:
   1. post_max_size (change 8M to 400M).
   2. upload_max_filesize (change 2M to 400M).
3. Now stop the Apache server and MySQL.
4. Now restart Apache server and MySQL.

Now it worked!