There are specific scenarios when you may be asked to change your PHP configuration. Specifically, you may be directed to edit a file on your server called php.ini and to increase the post_max_size limit.
What is the post_max_size PHP setting?
post_max_size is a setting managed through the PHP Options, which sets the maximum size of POST data that PHP will accept. This value should be the same as the upload_max_filesize.
While do not allow direct changes to PHP.ini on our servers. However, PHP configuration changes can be made from cPanel by following these steps:
How to Increase the post_max_size Limit in cPanel
1) Log into cPanel.
2) Look for the SOFTWARE section and click on Select PHP version

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3) Click on the Options link in the new window.
4) Here you can locate the post_max_size and click on the value.
A dropdown menu or text input box will appear, allowing you to change the value as required. Check your script, plugin, or theme’s documentation (or an on-screen error message) to find the correct value.
5) Once you’ll do the change, the new value will be automatically updated. If the change was successful, you would see a green box with a message confirming that the change has been applied.
That’s all! Now you know how to increase the post_max_size in cPanel.
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