our servers need to update the libxml2 version from 2.2.26 to 2.9 (latest version). It is no problem that we have been installed the libxml2-2.9 version on our servers. but the problem is how can we config the libs path of libxml2 path in php? Since it still show the old version on phpinfo(). What we have do is 1. Install libxml2 2.7.X on CentOS 5.X Using yum to install local files, and typed yum info libxml2, it shows 2.9 was installed. Thanks!