If you are in a Ubuntu version below 16.04 and want to use PHP 7 anyway, you can add Ondrej's PPA repository by doing:
sudo add-apt-repository ppa:ondrej/php
Make sure that all of your repositories are up to date:
sudo apt-get update
After updating your system's repositories, install PHP:
sudo apt-get install php7.0
Let's test the installation by checking the PHP version:
This should output something like this.
Note: Your output will be slightly different.
PHP 7.0.8-0ubuntu0.16.04.1 (cli) ( NTS ) Copyright (c) 1997-2016 The PHP Group Zend Engine v3.0.0, Copyright (c) 1998-2016 Zend Technologies with Zend OPcache v7.0.8-0ubuntu0.16.04.1, Copyright (c) 1999-2016, by Zend Technologies with Xdebug v2.4.0, Copyright (c) 2002-2016, by Derick Rethans
You now have the capability to run PHP from the command line.
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-*
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.
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 wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-6.noarch.rpm wget http://rpms.remirepo.net/enterprise/remi-release-6.rpm # 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