if you use PhpMyAdmin without install mbstring php extension, you get the warning about this: The mbstring PHP extension was not found and you seem to be using a multibyte charset. Without the mbstring extension phpMyAdmin is unable to split strings ...

The best method is using YUM: [root@server1 /]# yum install php-mcrypt after finish, restart apache/httpd [root@server1 /]# sudo /etc/init.d/httpd restart