installation of php5.4.12,mysql,httpd etc in rhel6,centos6

try this,

#su - #su -i

# 
#rpm -Uvh http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
 
#rpm -Uvh http://rpms.famillecollet.com/enterprise/remi-release-6.rpm

#rpm -Uvh http://dl.fedoraproject.org/pub/epel/5/i386/epel-release-5-4.noarch.rpm  

#rpm -Uvh http://rpms.famillecollet.com/enterprise/remi-release-5.rpm

# yum  --enablerepo=remi,remi-test install httpd php php-common

#yum --enablerepo=remi,remi-test install php-pecl-apc php-cli php-pear php-pdo 

php-mysql php-pgsql php-pecl-mongo 

php-sqlite php-pecl-memcache php-pecl-memcached 

php-gd php-mbstring php-mcrypt php-xml

 #service httpd start

#chkconfig --levels 235 httpd on