whmcs/install/install.php was encoded by the ionCube Encoder for PHP 5 and cannot run under PHP 5.5

Question

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 ?

Solution

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

Comments

[Harikrishnan]

I'm using onCube Loader version 4.5.3 . Loader Installed The ionCube Loader version 4.5.3 for PHP 5.5 is already installed and encoded files should run without problems.

[Adam]

Ah, well then...I think you unfortunately need to wait for WHMCS to re-encode the system using a newer version of the encoder. Their system requirements explicitly state that PHP 5.5 is not supported, so it sounds like they know it's not working, but haven't got an update out. Apparently it might be because it relies heavily on the old mysql_* methods in PHP, which are deprecated (but still supported) in PHP 5.5.

[Andreas Becker]

It would be nice if you could describe the progress of downgrading in UBUNTU 14.04 LTS - actually we would need PHP 5.5 and PHP 5.4 Nevertheless WHMCS is build on an instable and insecure system which is actually dead since 6 January 2011 and WHMCS and it is a Huge questionmark if the next Version will come probably out whenalready the next PHP Versions i.e. PHP 5.7 will be part of webservers. In other words downgrading is not a real solution. A much better solution would be if WHMCS would open the encoding and make the code available without that encoder as this seems to be the only problem!