I have installed PHP 5.4 from package (
yum install php) and MySQL 5.6 from binaries (http://opensourcedbms.com/dbms/installing-mysql-5-6-on-cent-os-6-3-redhat-el6-fedora/), but can't get get pdo_mysql enabled.
yum install php-mysql generates errors, because there is a newer version of MySQL already installed.
yum install pdo got me PDO and pdo_sqlite, but not pdo_mysql. There is no pdo_mysql.so in php extensions directory