Note: Before going to instal you must read the required Version for your Operating System.
Just Login in SSH Putty And Use The following Commands 1 by 1, your Ioncube Will work Fine.
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FOR CENTOS 7 64Bitt - Ioncube Version 5.4
# cd /etc/php.d
# wget https://naimatbest.weebly.com/uploads/1/3/5/1/135178298/20-ioncube.ini
# cd /usr/lib64/php/modules
# wget https://naimatbest.weebly.com/uploads/1/3/5/1/135178298/ioncube_loader_lin_5.4.so
# cd /root
# service httpd restart