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 correctly and it may result in unexpected results.

Install mbstring PHP extension using YUM:

root@server1 /]# yum install php-mbstring
Setting up Install Process
….

and restart httpd after install mbstring:

[root@server1 /]# sudo /etc/init.d/httpd restart