如何在CentOS 6.x上更新PHP并安装ICU库

I'm trying to install orocrm on centos server and it is asking for PHP 5.4 and ICU library 4.4. Although I updated PHP and restarted Apache my php version still shows PHP 5.3 if outputting phpinfo in a php page. But,if I use php -v command then it shows php 5.5I'm trying to install orocrm on centos server a