How to Increase PHP Upload Limit in cPanel
cPanel · Self-help guide
If your website says a file is too large to upload, you may need to increase the PHP upload limit. Log in to cPanel and open MultiPHP INI Editor or Select PHP Version with options. Choose the domain you want to edit. Look for settings such as upload_max_filesize, post_max_size, and memory_limit. Increase them to sensible values, for example 64M or 128M, depending on your hosting package. Save the changes and test the upload again. Keep post_max_size equal to or larger than upload_max_filesize. Very high limits can affect performance, so only increase them as much as your website needs.