PHP Installing in Enterprise Linux distributions (CentOS, Scientific Linux, etc)


Use the yum command to manage packages in Enterprise Linux-based operating systems:

yum install php

This installs a minimal install of PHP including some common features. If you need additional modules, you will need to install them separately. Once again, you can use yum to search for these packages:

yum search php-*

Example output:

php-bcmath.x86_64 : A module for PHP applications for using the bcmath library
php-cli.x86_64 : Command-line interface for PHP
php-common.x86_64 : Common files for PHP
php-dba.x86_64 : A database abstraction layer module for PHP applications
php-devel.x86_64 : Files needed for building PHP extensions
php-embedded.x86_64 : PHP library for embedding in applications
php-enchant.x86_64 : Human Language and Character Encoding Support
php-gd.x86_64 : A module for PHP applications for using the gd graphics library
php-imap.x86_64 : A module for PHP applications that use IMAP

To install the gd library:

yum install php-gd

Enterprise Linux distributions have always been conservative with updates, and typically do not update beyond the point release they shipped with. A number of third party repositories provide current versions of PHP:

IUS and Webtatic provide replacement packages with different names (e.g. php56u or php56w to install PHP 5.6) while Remi's repository provides in-place upgrades by using the same names as the system packages.

Following are instructions on installing PHP 7.0 from Remi's repository. This is the simplest example, as uninstalling the system packages is not required.

# download the RPMs; replace 6 with 7 in case of EL 7
# install the repository information
rpm -Uvh remi-release-6.rpm epel-release-latest-6.noarch.rpm
# enable the repository
yum-config-manager --enable epel --enable remi --enable remi-safe --enable remi-php70
# install the new version of PHP
# NOTE: if you already have the system package installed, this will update it
yum install php