Installing Modules On cPanel For WHMCS - IonCube, FileInfo & Soap IonCube Go to /opt/cpanel/ea-php81/root/usr/lib64/php/modules (PHP 8.1) and unzip the tar you download from here with the .so file. (The loaders from their website) Then in /opt/cpanel/ea-php81/root/etc/php.d (PHP 8.1) put nano 00-ioncube.ini and put in zend_extension = /opt/cpanel/ea-php81/root/usr/lib64/php/modules/ioncube_loader_lin_8.1.so Once done, you need to systemctl restart ea-php81-php-fpm. Soap Copy the soap.so file from a normal PHP-8.1 install in the location /usr/lib/php/20210902 (PHP 8.1) and put it into /opt/cpanel/ea-php81/root/usr/lib64/php/modules (PHP 8.1). Then in /opt/cpanel/ea-php81/root/etc/php.d (PHP 8.1) put nano 00-soap.ini and put in extension=soap.so Once done, you need to systemctl restart ea-php81-php-fpm. FileInfo Login to WHM (Not cPanel client side, WHM's admin side). Search for "Software" along the left side and find "EasyApache4". Click the button that says Customize next to Currently Installed Packages. Click PHP Extensions along the left hand side in blue (3rd option down). Search for Fileinfo in the search bar in the top left and click the toggle on the PHP-8.1 version. Click Review. After looking over the proposed changes, scroll to the bottom of the screen and click provision. Once done, you need to systemctl restart ea-php81-php-fpm in terminal. Referenced from: https://support.cpanel.net/hc/en-us/articles/1500000107181-How-do-I-install-Fileinfo- If you wish to install extensions for a user of cPanel but don't want to install these extensions globally, follow: Example below is for soap extension Go into that user with su in terminal or use the cPanel’s terminal page. Run pear, this will give you results. Run pear install Archive_Tar to install tar. Run pear install PEAR to install Pear required for SOAP to install. Ironic. Lmfao. Run pear install soap then install using the channel link. Note: You might need to use --force on some of the commands as the tar version of 1.4.14 breaks soap install. Note: On all instances above, you can restart Apache's FPM in the WHM interface instead of the command by searching "Services" in the top left then finding "Apache FPM".