Using ionCube encoded and secured PHP files requires a file called the ionCube Loader 5.0 + to be installed on the web server and made available to PHP.
PHP can use the Loader with one line added to a PHP configuration file (php.ini)
To use the Wizard go to _ioncube_installer folder:
1. Upload the script loader-wizard.php into your web space, then
2. Launch the Loader Wizard script in your browser.
3. Follow the steps in the Loader Wizard to install the appropriate Loaders for your system.
4. If the Loader Wizard is not found, carefully check the location to where you uploaded the wizard script on your server.
Opencart has two php.ini files!
php.ini in main category and another one in admin category