If you have a 32-bit system (e.g. i686), just change the wget command, that downloads the loader. Find an overview of all loaders on the SourceGuardian-website.
First, create a temporary folder "loader" at /usr/src/:
mkdir /usr/src/loader
cd /usr/src/loader
Download the SourceGuardian package (64-bit here) directly into the new folder:
wget -NÂ https://www.sourceguardian.com/loaders/download/loaders.linux-x86_64.tar.gz
Now extract the file:
tar xzf loaders.linux-x86_64.tar.gz
Copy the file that meets your PHP version like this:
cp ixed.5.4.lin /usr/lib64/php/modules/
"ts" in the filenames means "Thread Safety". If "Thread Safety" is enabled (usually not), copy the file ixed.5.3ts.lin instead.
Now create the SourceGuardian configuration file:
cd /etc/php.d/
touch sourceguardian.ini
nano sourceguardian.ini
Add the following to the file:
[sourceguardian]
zend_extension="/usr/lib64/php/modules/ixed.5.4.lin"
and save it. Now restart Apache:
service htttpd restart
Now the extension is installed for apache2 and CLI and VIMP will be decrypted.