Enable block algorithms such as DES, TripleDES, Blowfish (default), 3-WAY, SAFER-SK64, SAFER-SK128, TWOFISH, TEA, RC2 and GOST with mcrypt.

Necessity

Enable mcrypt module on ApachephpMyAdmin

You can using EPEL (Extra Packages for Enterprise Linux) to install that.

# install EPEL with yum
yum -y install epel-release
# install php-mcrypt
yum -y install php-mcrypt

Open for edit /etc/php5/apache2/php.ini file.

sudo nano /etc/php5/apache2/php.ini

Find [mcrypt] text and write bellow extension=mcrypt.so. The file must look like this.

[mcrypt]
; For more information about mcrypt settings see http://php.net/mcrypt-module-open
extension=mcrypt.so

Restart Apache service.