[PHP] Howto Install PHP 5.4, 5.5 or 5.6 on CentOS 6 and CentOS 7

So CentOS and PHP, as you can see below (taken from DistroWatch) CentOS is a bit outdated with it’s PHP versions which as a PHP developer can be a pain in the ass!

PHP Current VersionCentOS 7.0-1406CentOS 6.6
5.6.4 5.4.16 5.3.3

However there is yet again hope! This time we need 2 additional repos. First up we need EPEL and secondly we need Remia French guy who is king of PHP repos!

Repo Installation

Open up a SSH connection to your server and run the following commands (make sure you run as sudo if you need to):

For CentOS 7 (including EPEL install)

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wget http://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-5.noarch.rpm

wget http://rpms.famillecollet.com/enterprise/remi-release-7.rpm

rpm -Uvh remi-release-7*.rpm epel-release-7*.rpm

If you already have EPEL installed:

For CentOS 6 (including EPEL install)

If you already have EPEL installed:

Enabling the Repo

Now we need to make sure the repo is enabled and select which version you want to install. We need to head over to/etc/yum.repos.d you should inside see a file called remi.repo.

Open the file in your favourite editor (Nano, Pico, Vi etc), you’ll see a number of sections. We need to make sure that the first section [remi] is enabled:

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[remi]

name=Les RPM de remi pour Enterprise Linux 6 - $basearch

#baseurl=http://rpms.famillecollet.com/enterprise/6/remi/$basearch/

mirrorlist=http://rpms.famillecollet.com/enterprise/6/remi/mirror

enabled=1

gpgcheck=1

gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-remi>

Note the line enabled=1 make sure this is set! Now technically you can actually go ahead and install PHP, but you will only get PHP 5.4.*. Which might be want to you want is so skip ahead to the next section!

If we want PHP 5.5 or PHP 5.6 we need to do a bit more work, further down in the repo.repo file you will see two additional sections [remi-php55] and [remi-php56], decide which PHP version you want to install and then enable the correct. So for PHP 5.6 we would change to:

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[remi-php56]

name=Les RPM de remi de PHP 5.6 pour Enterprise Linux 6 - $basearch

#baseurl=http://rpms.famillecollet.com/enterprise/6/php56/$basearch/

mirrorlist=http://rpms.famillecollet.com/enterprise/6/php56/mirror

# WARNING: If you enable this repository, you must also enable "remi"

enabled=1

gpgcheck=1

gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-remi>

Once you made your changes save your modified file and quit your editor.

Installing PHP

Now I’m assuming you don’t already have PHP installed, this bit is super simple.

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sudo yum install php php-gd php-mysql php-mcrypt

So the above assumes you want MySQL, GD and Mcrypt support in your PHP, but you should see something like the below depending on which version of PHP you are trying to install:

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================================================================================================================================

 Package                        Arch                   Version                                 Repository                  Size

================================================================================================================================

Installing:

 php                            x86_64                 5.5.20-2.el6.remi                       remi-php55                 2.6 M

 php-gd                         x86_64                 5.5.20-2.el6.remi                       remi-php55                  72 k

 php-mysqlnd                    x86_64                 5.5.20-2.el6.remi                       remi-php55                 3.6 M

Installing for dependencies:

 php-cli                        x86_64                 5.5.20-2.el6.remi                       remi-php55                 3.7 M

 php-common                     x86_64                 5.5.20-2.el6.remi                       remi-php55                 1.0 M

 php-pdo                        x86_64                 5.5.20-2.el6.remi                       remi-php55                 112 k

 php-pear                       noarch                 1:1.9.5-3.el6.remi                      remi                       375 k

 php-pecl-jsonc                 x86_64                 1.3.6-1.el6.remi.5.5.1                  remi-php55                  47 k

 php-pecl-zip                   x86_64                 1.12.4-1.el6.remi.5.5                   remi-php55                 269 k

 php-process                    x86_64                 5.5.20-2.el6.remi                       remi-php55                  57 k

 php-xml                        x86_64                 5.5.20-2.el6.remi                       remi-php55                 208 k

Transaction Summary

================================================================================================================================

Install      11 Package(s)

As you can see PHP is installing version 5.5.20-2.el6.remi from the remi-php55 repo! Once you have hit Y to confirm the install restart apache and magical unicorns you have a better version of PHP!

You can also change your mind in the future by going back into the remi.repo file and enable a different PHP version and then run yum update and if you have moved from 5.5 to 5.6 it will upgrade PHP for you. If you want to downgrade for any reason you will need to remove PHP (sudo yum remove php*) and then reinstall the PHP modules you want.

Hope this helps!

Source
https://www.mojowill.com/geek/howto-install-php-5-4-5-5-or-5-6-on-centos-6-and-centos-7/