If your Host is guessing then this will crash your site or have no effect. Let’s assume they are not guessing, but also be prepared for that they are guessing and this code does crash your website. FTP to your website so that you have a connection open to your site in case your site crashes and you need to delete the root .htaccess file that contains this new php handler that you are going to add.
You can get your Hosting account folder name on the BPS System Info page.
Document Root Path: /home/xxxxx/public_html/
php/php.ini handler .htaccess code goes in this Root Custom Code text box:
Click the Save Root Custom Code button.
Go to the BPS Security Modes page, click the Create secure.htaccess File AutoMagic button and activate Root folder BulletProof Mode.
If your site does not crash then you can add directives in your custom php.ini file that you create in the root of your hosting account /public_html/. Every host is different for what you can and cannot add in a custom php.ini file so I cannot assist you any further with that since there are 1,000′s of different possibilites.