When I tried to install whmcs, I got this error.
/whmcs/install/install.php was encoded by the ionCube Encoder for PHP 5 and cannot run
under PHP 5.5.\n Please ask the provider of the script to provide a version encoded with
either the ionCube Encoder for PHP 5.3 or for PHP 5.4. in Unknown on line 0
My Server has PHP 5.5.8, Apache/2.4.6 (Ubuntu)
How can I fix this issue without downgrading PHP ?
It looks like you're using an older version of the ionCube Loader that isn't compatible with PHP5.5. They've released an updated version that apparently works with PHP5.5. You can download new versions here: http://www.ioncube.com/loaders.php