Why can't `php-mysql` be installed in Red Hat Enterprise Linux 6.5 using `yum` ?

Issue

• Why can't php-mysql be installed in Red Hat Enterprise Linux 6.5 using yum ?
• While installing, following messages are appearing.

# yum install php-mysql
http://repo.mysql.com/yim/mysql-connectors-community/el/6/i386/repdata/respond.xml: [Errno 12] Timeout on http://repo.mysql.com/yim/mysql-connectors-community/el/6/i386/repdata/respond.xml: (28, 'Connection time-out')
Trying other mirror.
Package mysql-libs-5.1.71-1.el6.i686 is obsoluted by mysql-community-libs-5.6.1501.el6.i686 which is already installed
Package mysql-libs-5.1.71-1.el6.i686 is obsoluted by mysql-community-libs-5.6.1501.el6.i686 which is already installed
Package mysql-libs-5.1.71-1.el6.i686 is obsoluted by mysql-community-libs-5.6.1501.el6.i686 which is already installed
Package mysql-libs-5.1.71-1.el6.i686 is obsoluted by mysql-community-libs-5.6.1501.el6.i686 which is already installed
Error: Package: php-mysql-5.3.3-27.el6_5.i686 (rhel-6-server-rpms)
        Requires: libmysqlclient.so.16
        Available: mysql-community-libs-compat-5.6.15-1.el6.i686 (mysql56-community)
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