# yum install php php-pear
...
# pear upgrade --force http://pear.php.net/get/Archive_Tar-1.3.1.tar
# pear upgrade --force http://pear.php.net/get/Console_Getopt-1.2.tar
# pear upgrade --force http://pear.php.net/get/XML_RPC-1.5.0.tar
# pear upgrade...