Before beginning this, it is assumed that you already have installed LAMP on your server.
To install, first you must add the Webtatic EL yum repository information corresponding to your CentOS/RHEL version to yum:
rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm rpm -Uvh https://mirror.webtatic.com/yum/el7/webtatic-release.rpm
rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-6.noarch.rpm rpm -Uvh https://mirror.webtatic.com/yum/el6/latest.rpm
Now you can install PHP 7.0’s mod_php SAPI (along with an opcode cache) by doing:
yum install php70w php70w-opcache
You can alternatively install PHP 7.0’s php-fpm SAPI (along with an opcode cache by doing:
yum install php70w-fpm php70w-opcache
See the package list below for additional SAPIs and PHP extensions.
This will install the mod_php SAPI for PHP, however there are other sapis such as php-fpm (via php70w-fpm package). Read on below for more information about the available SAPIs
If you would like to upgrade php to this version it is recommended that you first check that your system will support the upgrade, e.g. making sure any CPanel-like software can run after the upgrade.
Unless you know what you are doing, it is risky upgrading an existing system. It’s much safer to do this by provisioning a separate server to perform the upgrade as a fresh install instead.
If you know what you are doing, you can upgrade PHP by:
yum install yum-plugin-replace yum replace php-common --replace-with=php70w-common
It will likely give you a message “WARNING: Unable to resolve all providers …“. This is normal, and you can continue by tying “y”. You will be given a chance to see what packages will be installed and removed before again being given a chance to confirm.
SAPIs are different runtime environments of PHP.
(non-thread safety) Contained in the php70w package, this SAPI integrates into Apache Httpd (2.2.* on RHEL/CentOS 6, 2.4.* on RHEL/CentOS 7). It is the standard SAPI for use with httpd prefork mpm (the default mode httpd is ran under. It is not thread-safe, but doesn’t need to be due to prefork not using threads. It’s located at /usr/lib/httpd/modules/libphp7.so
Contained in the php70w-cli package, this SAPI allows running scripts from the command-line, and also has a built-in web server for development-use. Located at /usr/bin/php
Contained in the php70w-fpm package, fpm (FastCGI Process Manager) is a scalable FastCGI process, which acts similar to how Httpd prefork mpm works managing it’s forks. Located at /usr/sbin/php-fpm, it is controlled using the /etc/init.d/php-fpm service script
Contained in the php70w-phpdbg package, phpdbg has the ability to debug scripts using breakpoints from the command-line, and also supports remote-debugging using an external Java client for remote communication.
Contained in the php70w-embedded package, this SAPI allows embedding PHP in other applications. It’s library is located at /usr/lib/libphp7.so
Contained in the php70w-cli package, these SAPIs are not recommended for use, but are available where needed. They both exist in the binary at /usr/bin/php-cgi.
(thread safety) Contained in the php70w package, this SAPI integrates into Apache Httpd (2.2.* on RHEL/CentOS 6, 2.4.* on RHEL/CentOS 7). It is the standard SAPI for use with httpd worker mpm. It’s supposed to be thread-safe, but can’t guarantee to be, and certainly not under additional PHP extensions. It’s better to use FastCGI SAPIs than this one. It’s located at /usr/lib/httpd/modules/libphp7-zts.so
The PHP distribution now comes with an opcode cache. This is the Zend Optimizer+ opcode cache, now known as the Zend OPcache extension. This extension is optional, so does not preclude you from using an alternate one.
Due to it being included in the PHP source distribution, it will be well maintained and more suitable for use while other Opcode cache’s are being updated over the coming months.
yum install php70w-opcache