website: http://iuscommunity.org/

download: epel-release-* ; ius-release-*

to update PHP:

remove rhel packages:

  
rpm -qa | grep php

yum shell

remove php-gd php-cli php-odbc php-mbstring php-pdo php php-xml php-common php-ldap php-mysql php-imap

install php52-gd php52-cli php52-odbc php52-mbstring php52-pdo php52 php52-xml php52-common php52-ldap php52-mysql php52-imap php52-mcrypt

transaction solve

transaction run