Install EPEL and Remi Repository
1. To install latest stable version of PHP, you need to add EPEL and Remi repository to your CentOS 6distribution using the following commands as root user.
# wget http://dl.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm # wget http://rpms.famillecollet.com/enterprise/remi-release-6.rpm # rpm -Uvh epel-release-6-8.noarch.rpm remi-release-6.rpm
Install Yum-Utils to Manage Repository
2. Install yum-utils, a collection of utilities that integrate with yum to extend its native features in several ways, thus making it more powerful and easier to use.
The package yum-utils used to enable or disable packages on the fly without any manual configuration.
# yum install yum-utils
Install PHP 5.4, PHP 5.5 or PHP 5.6 on CentOS 6
3. Once EPEL, Remi and yum-utils has been installed, you can now move ahead to install PHP 5.4, PHP 5.5 or PHP 5.6 with all required modules on CentOS 6 distribution by enabling remi repository using yum-config-manager command as shown.
# yum-config-manager --enable remi-php54 [Intall PHP 5.4] # yum-config-manager --enable remi-php55 [Intall PHP 5.5] # yum-config-manager --enable remi-php56 [Intall PHP 5.6]
4. Once you’ve enabled selected version of PHP, you can install PHP (in my case I have chosen PHP 5.6) with all needed modules as shown.
# yum-config-manager --enable remi-php56 [Intall PHP 5.6] # yum install php php-mcrypt php-cli php-gd php-curl php-mysql php-ldap php-zip php-fileinfo
If you want to downgrade PHP version for any reason, you will need to remove existing PHP version and then reinstall the new PHP with modules you want.