Install Multiple PHP Versions on CentOS / RHEL 8 - CentLinux - Installation Guides & HowTos

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Saturday, 20 March 2021

Install Multiple PHP Versions on CentOS / RHEL 8

Install Multiple PHP Versions on RHEL 8

This article will show you how to install multiple versions of PHP on Red Hat Enterprise Linux (RHEL) 8.

 

Table of Contents:

 

Problem Definition:

It is a very common scenario for web hosting companies to host websites of different PHP versions. To implement it, they use different Apache handlers, according to their requirements. The two most commonly used implementations are DSO and PHP-FPM.

Although tradional DSO (mod_php) handler is simple to implement and the fastest way to run PHP web applications, but it has its own pros and cons like DSO was not built to run multiple PHP versions.

FPM (FastCGI Process Manager) is an alternative PHP FastCGI implementation with some additional features (mostly) useful for heavy-loaded sites. Using this handler, the system will run PHP scripts as the user that owns the domain/subdomain. Each FPM pool can have independent settings.

In this guide, you will see how to implement two versions of PHP on a single Apache web servers by using PHP-FPM and mod_fcgid handler. For a quick reference, you can buy following short book, it is very comprehensive and to the point and will guide you about the implementation of Apache and PHP-FPM.

 

Environment Specification:

We are using a minimal RHEL 8 virtual machine with following specifications.

  • CPU - 3.4 Ghz (2 cores)
  • Memory - 2 GB
  • Storage - 60 GB
  • Operating System - RHEL 8.3
  • Hostname – apache-01.centlinux.com
  • IP Address - 192.168.116.206 /24

 

Installing Third Party Yum Repositories:

Connect with apache-01.centlinux.com as root user by using a ssh client.

Install EPEL (Extra Packages for Enterprise Linux) yum repository by using following command.

[root@apache-01 ~]# dnf install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
Updating Subscription Management repositories.
Last metadata expiration check: 0:13:17 ago on Sun 14 Mar 2021 10:54:57 AM EDT.
epel-release-latest-8.noarch.rpm                7.3 kB/s |  22 kB     00:03
Dependencies resolved.
================================================================================
 Package             Architecture  Version            Repository           Size
================================================================================
Installing:
 epel-release        noarch        8-10.el8           @commandline         22 k

Transaction Summary
================================================================================
Install  1 Package

Total size: 22 k
Installed size: 32 k
Downloading Packages:
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Preparing        :                                                        1/1
  Installing       : epel-release-8-10.el8.noarch                           1/1
  Running scriptlet: epel-release-8-10.el8.noarch                           1/1
  Verifying        : epel-release-8-10.el8.noarch                           1/1
Installed products updated.

Installed:
  epel-release-8-10.el8.noarch

Complete!

Here, we need to install PHP 5.6 and PHP 7.4. Both of these versions are available in Remi Yum repository. Therefore, we are installing Remi yum repository on our RHEL 8 server by using dnf command.

[root@apache-01 ~]# dnf install -y https://rpms.remirepo.net/enterprise/remi-release-8.rpm
Updating Subscription Management repositories.
Extra Packages for Enterprise Linux Modular 8 - 113 kB/s | 556 kB     00:04
Extra Packages for Enterprise Linux 8 - x86_64   80 kB/s | 8.9 MB     01:53
Last metadata expiration check: 0:00:02 ago on Sun 14 Mar 2021 11:11:46 AM EDT.
remi-release-8.rpm                               11 kB/s |  25 kB     00:02
Dependencies resolved.
================================================================================
 Package            Architecture Version               Repository          Size
================================================================================
Installing:
 remi-release       noarch       8.3-1.el8.remi        @commandline        25 k

Transaction Summary
================================================================================
Install  1 Package

Total size: 25 k
Installed size: 20 k
Downloading Packages:
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Preparing        :                                                        1/1
  Installing       : remi-release-8.3-1.el8.remi.noarch                     1/1
  Verifying        : remi-release-8.3-1.el8.remi.noarch                     1/1
Installed products updated.

Installed:
  remi-release-8.3-1.el8.remi.noarch

Complete!

Build yum cache for newly installed yum repositories.

[root@apache-01 ~]# dnf makecache
Updating Subscription Management repositories.
Extra Packages for Enterprise Linux Modular 8 - 2.2 kB/s | 9.5 kB     00:04
Extra Packages for Enterprise Linux 8 - x86_64  1.9 kB/s | 6.0 kB     00:03
Red Hat Enterprise Linux 8 for x86_64 - BaseOS  1.4 kB/s | 4.1 kB     00:02
Red Hat Enterprise Linux 8 for x86_64 - AppStre 2.1 kB/s | 4.5 kB     00:02
Remi's Modular repository for Enterprise Linux   26 kB/s | 740 kB     00:27
Safe Remi's RPM repository for Enterprise Linux 213 kB/s | 1.7 MB     00:07
Metadata cache created.

 

Install Apache Web Server on RHEL 8:

In Red Hat based Linux distributions, Apache web server is provided with httpd software package. Therefore, you are required to install it to enable web services.

[root@apache-01 ~]# dnf install -y httpd
Updating Subscription Management repositories.
Last metadata expiration check: 0:01:13 ago on Sun 14 Mar 2021 11:17:18 AM EDT.
Dependencies resolved.
================================================================================
 Package            Arch   Version       Repository                        Size
================================================================================
Installing:
 httpd              x86_64 2.4.37-30.module+el8.3.0+7001+0766b9e7
                                         rhel-8-for-x86_64-appstream-rpms 1.4 M
Installing dependencies:
 apr                x86_64 1.6.3-11.el8  rhel-8-for-x86_64-appstream-rpms 125 k
 apr-util           x86_64 1.6.1-6.el8   rhel-8-for-x86_64-appstream-rpms 105 k
 httpd-filesystem   noarch 2.4.37-30.module+el8.3.0+7001+0766b9e7
                                         rhel-8-for-x86_64-appstream-rpms  37 k
 httpd-tools        x86_64 2.4.37-30.module+el8.3.0+7001+0766b9e7
                                         rhel-8-for-x86_64-appstream-rpms 104 k
 mailcap            noarch 2.1.48-3.el8  rhel-8-for-x86_64-baseos-rpms     39 k
 mod_http2          x86_64 1.15.7-2.module+el8.3.0+7670+8bf57d29
                                         rhel-8-for-x86_64-appstream-rpms 154 k
 redhat-logos-httpd noarch 81.1-1.el8    rhel-8-for-x86_64-baseos-rpms     26 k
Installing weak dependencies:
 apr-util-bdb       x86_64 1.6.1-6.el8   rhel-8-for-x86_64-appstream-rpms  25 k
 apr-util-openssl   x86_64 1.6.1-6.el8   rhel-8-for-x86_64-appstream-rpms  27 k
Enabling module streams:
 httpd                     2.4

Transaction Summary
================================================================================
Install  10 Packages

Total download size: 2.0 M
Installed size: 5.4 M
Downloading Packages:
(1/10): redhat-logos-httpd-81.1-1.el8.noarch.rp 8.5 kB/s |  26 kB     00:03
(2/10): apr-util-bdb-1.6.1-6.el8.x86_64.rpm      17 kB/s |  25 kB     00:01
(3/10): apr-util-openssl-1.6.1-6.el8.x86_64.rpm 5.3 kB/s |  27 kB     00:05
(4/10): mailcap-2.1.48-3.el8.noarch.rpm         7.5 kB/s |  39 kB     00:05
(5/10): apr-util-1.6.1-6.el8.x86_64.rpm          44 kB/s | 105 kB     00:02
(6/10): httpd-filesystem-2.4.37-30.module+el8.3  17 kB/s |  37 kB     00:02
(7/10): httpd-tools-2.4.37-30.module+el8.3.0+70  27 kB/s | 104 kB     00:03
(8/10): mod_http2-1.15.7-2.module+el8.3.0+7670+  35 kB/s | 154 kB     00:04
(9/10): apr-1.6.3-11.el8.x86_64.rpm              39 kB/s | 125 kB     00:03
(10/10): httpd-2.4.37-30.module+el8.3.0+7001+07  78 kB/s | 1.4 MB     00:18
--------------------------------------------------------------------------------
Total                                            89 kB/s | 2.0 MB     00:23
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Preparing        :                                                        1/1
  Installing       : apr-1.6.3-11.el8.x86_64                               1/10
  Running scriptlet: apr-1.6.3-11.el8.x86_64                               1/10
  Installing       : apr-util-bdb-1.6.1-6.el8.x86_64                       2/10
  Installing       : apr-util-1.6.1-6.el8.x86_64                           3/10
  Running scriptlet: apr-util-1.6.1-6.el8.x86_64                           3/10
  Installing       : apr-util-openssl-1.6.1-6.el8.x86_64                   4/10
  Installing       : httpd-tools-2.4.37-30.module+el8.3.0+7001+0766b9e7    5/10
  Running scriptlet: httpd-filesystem-2.4.37-30.module+el8.3.0+7001+076    6/10
  Installing       : httpd-filesystem-2.4.37-30.module+el8.3.0+7001+076    6/10
  Installing       : redhat-logos-httpd-81.1-1.el8.noarch                  7/10
  Installing       : mailcap-2.1.48-3.el8.noarch                           8/10
  Installing       : mod_http2-1.15.7-2.module+el8.3.0+7670+8bf57d29.x8    9/10
  Installing       : httpd-2.4.37-30.module+el8.3.0+7001+0766b9e7.x86_6   10/10
  Running scriptlet: httpd-2.4.37-30.module+el8.3.0+7001+0766b9e7.x86_6   10/10
  Verifying        : mailcap-2.1.48-3.el8.noarch                           1/10
  Verifying        : redhat-logos-httpd-81.1-1.el8.noarch                  2/10
  Verifying        : apr-util-openssl-1.6.1-6.el8.x86_64                   3/10
  Verifying        : apr-util-bdb-1.6.1-6.el8.x86_64                       4/10
  Verifying        : apr-util-1.6.1-6.el8.x86_64                           5/10
  Verifying        : httpd-2.4.37-30.module+el8.3.0+7001+0766b9e7.x86_6    6/10
  Verifying        : httpd-filesystem-2.4.37-30.module+el8.3.0+7001+076    7/10
  Verifying        : mod_http2-1.15.7-2.module+el8.3.0+7670+8bf57d29.x8    8/10
  Verifying        : httpd-tools-2.4.37-30.module+el8.3.0+7001+0766b9e7    9/10
  Verifying        : apr-1.6.3-11.el8.x86_64                              10/10
Installed products updated.

Installed:
  apr-1.6.3-11.el8.x86_64
  apr-util-1.6.1-6.el8.x86_64
  apr-util-bdb-1.6.1-6.el8.x86_64
  apr-util-openssl-1.6.1-6.el8.x86_64
  httpd-2.4.37-30.module+el8.3.0+7001+0766b9e7.x86_64
  httpd-filesystem-2.4.37-30.module+el8.3.0+7001+0766b9e7.noarch
  httpd-tools-2.4.37-30.module+el8.3.0+7001+0766b9e7.x86_64
  mailcap-2.1.48-3.el8.noarch
  mod_http2-1.15.7-2.module+el8.3.0+7670+8bf57d29.x86_64
  redhat-logos-httpd-81.1-1.el8.noarch

Complete!

 

Install Multiple PHP Versions on RHEL 8:

You can easily install different versions of PHP from Remi yum repository. We are installing PHP 5.6, the oldest available version right now.

[root@apache-01 ~]# dnf install -y php56 php56-php-fpm
Updating Subscription Management repositories.
Last metadata expiration check: 0:17:47 ago on Sun 14 Mar 2021 11:17:18 AM EDT.
Dependencies resolved.
================================================================================
 Package          Arch   Version            Repository                     Size
================================================================================
Installing:
 php56            x86_64 3.0-1.el8.remi     remi-safe                     8.2 k
 php56-php-fpm    x86_64 5.6.40-25.el8.remi remi-safe                     1.4 M
Installing dependencies:
 checkpolicy      x86_64 2.9-1.el8          rhel-8-for-x86_64-baseos-rpms 346 k
 environment-modules
                  x86_64 4.5.2-1.el8        rhel-8-for-x86_64-baseos-rpms 421 k
 php56-libzip     x86_64 1.7.3-2.el8.remi   remi-safe                      66 k
 php56-php-cli    x86_64 5.6.40-25.el8.remi remi-safe                     2.7 M
 php56-php-common x86_64 5.6.40-25.el8.remi remi-safe                     711 k
 php56-php-pear   noarch 1:1.10.12-5.el8.remi
                                            remi-safe                     366 k
 php56-php-pecl-jsonc
                  x86_64 1.3.10-3.el8.remi  remi-safe                      51 k
 php56-php-pecl-zip
                  x86_64 1.19.2-1.el8.remi  remi-safe                      55 k
 php56-php-process
                  x86_64 5.6.40-25.el8.remi remi-safe                      74 k
 php56-php-xml    x86_64 5.6.40-25.el8.remi remi-safe                     179 k
 php56-runtime    x86_64 3.0-1.el8.remi     remi-safe                     1.1 M
 policycoreutils-python-utils
                  noarch 2.9-9.el8          rhel-8-for-x86_64-baseos-rpms 251 k
 python3-audit    x86_64 3.0-0.17.20191104git1c2f876.el8
                                            rhel-8-for-x86_64-baseos-rpms  86 k
 python3-libsemanage
                  x86_64 2.9-3.el8          rhel-8-for-x86_64-baseos-rpms 127 k
 python3-policycoreutils
                  noarch 2.9-9.el8          rhel-8-for-x86_64-baseos-rpms 2.2 M
 python3-setools  x86_64 4.3.0-2.el8        rhel-8-for-x86_64-baseos-rpms 626 k
 scl-utils        x86_64 1:2.0.2-12.el8     rhel-8-for-x86_64-appstream-rpms
                                                                           47 k
 tcl              x86_64 1:8.6.8-2.el8      rhel-8-for-x86_64-baseos-rpms 1.1 M

Transaction Summary
================================================================================
Install  20 Packages

Total download size: 12 M
Installed size: 37 M
Downloading Packages:
(1/20): checkpolicy-2.9-1.el8.x86_64.rpm         25 kB/s | 346 kB     00:14
(2/20): policycoreutils-python-utils-2.9-9.el8.  57 kB/s | 251 kB     00:04
(3/20): python3-audit-3.0-0.17.20191104git1c2f8  56 kB/s |  86 kB     00:01
(4/20): tcl-8.6.8-2.el8.x86_64.rpm               45 kB/s | 1.1 MB     00:25
(5/20): environment-modules-4.5.2-1.el8.x86_64.  79 kB/s | 421 kB     00:05
(6/20): python3-libsemanage-2.9-3.el8.x86_64.rp  40 kB/s | 127 kB     00:03
(7/20): scl-utils-2.0.2-12.el8.x86_64.rpm        30 kB/s |  47 kB     00:01
(8/20): php56-3.0-1.el8.remi.x86_64.rpm         4.5 kB/s | 8.2 kB     00:01
(9/20): python3-setools-4.3.0-2.el8.x86_64.rpm   91 kB/s | 626 kB     00:06
(10/20): php56-libzip-1.7.3-2.el8.remi.x86_64.r  26 kB/s |  66 kB     00:02
(11/20): python3-policycoreutils-2.9-9.el8.noar  67 kB/s | 2.2 MB     00:34
(12/20): php56-php-common-5.6.40-25.el8.remi.x8  68 kB/s | 711 kB     00:10
(13/20): php56-php-pear-1.10.12-5.el8.remi.noar  51 kB/s | 366 kB     00:07
(14/20): php56-php-pecl-jsonc-1.3.10-3.el8.remi  39 kB/s |  51 kB     00:01
(15/20): php56-php-pecl-zip-1.19.2-1.el8.remi.x  29 kB/s |  55 kB     00:01
(16/20): php56-php-process-5.6.40-25.el8.remi.x  37 kB/s |  74 kB     00:02
(17/20): php56-php-xml-5.6.40-25.el8.remi.x86_6  60 kB/s | 179 kB     00:02
(18/20): php56-php-fpm-5.6.40-25.el8.remi.x86_6  38 kB/s | 1.4 MB     00:38
(19/20): php56-php-cli-5.6.40-25.el8.remi.x86_6  53 kB/s | 2.7 MB     00:52
(20/20): php56-runtime-3.0-1.el8.remi.x86_64.rp  42 kB/s | 1.1 MB     00:28
--------------------------------------------------------------------------------
Total                                           131 kB/s |  12 MB     01:33
warning: /var/cache/dnf/remi-safe-ff04689114f71b24/packages/php56-3.0-1.el8.remi.x86_64.rpm: Header V4 RSA/SHA256 Signature, key ID 5f11735a: NOKEY
Safe Remi's RPM repository for Enterprise Linux 3.0 MB/s | 3.1 kB     00:00
Importing GPG key 0x5F11735A:
 Userid     : "Remi's RPM repository <remi@remirepo.net>"
 Fingerprint: 6B38 FEA7 231F 87F5 2B9C A9D8 5550 9759 5F11 735A
 From       : /etc/pki/rpm-gpg/RPM-GPG-KEY-remi.el8
Key imported successfully
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Preparing        :                                                        1/1
  Installing       : python3-setools-4.3.0-2.el8.x86_64                    1/20
  Installing       : python3-libsemanage-2.9-3.el8.x86_64                  2/20
  Installing       : python3-audit-3.0-0.17.20191104git1c2f876.el8.x86_    3/20
  Installing       : checkpolicy-2.9-1.el8.x86_64                          4/20
  Installing       : python3-policycoreutils-2.9-9.el8.noarch              5/20
  Installing       : policycoreutils-python-utils-2.9-9.el8.noarch         6/20
  Installing       : tcl-1:8.6.8-2.el8.x86_64                              7/20
  Running scriptlet: tcl-1:8.6.8-2.el8.x86_64                              7/20
  Installing       : environment-modules-4.5.2-1.el8.x86_64                8/20
  Running scriptlet: environment-modules-4.5.2-1.el8.x86_64                8/20
  Installing       : scl-utils-1:2.0.2-12.el8.x86_64                       9/20
  Installing       : php56-runtime-3.0-1.el8.remi.x86_64                  10/20
  Running scriptlet: php56-runtime-3.0-1.el8.remi.x86_64                  10/20
  Installing       : php56-libzip-1.7.3-2.el8.remi.x86_64                 11/20
  Installing       : php56-php-pecl-jsonc-1.3.10-3.el8.remi.x86_64        12/20
  Installing       : php56-php-common-5.6.40-25.el8.remi.x86_64           13/20
  Installing       : php56-php-pecl-zip-1.19.2-1.el8.remi.x86_64          14/20
  Installing       : php56-php-cli-5.6.40-25.el8.remi.x86_64              15/20
  Installing       : php56-php-process-5.6.40-25.el8.remi.x86_64          16/20
  Installing       : php56-php-xml-5.6.40-25.el8.remi.x86_64              17/20
  Installing       : php56-php-pear-1:1.10.12-5.el8.remi.noarch           18/20
  Running scriptlet: php56-php-pear-1:1.10.12-5.el8.remi.noarch           18/20
  Installing       : php56-3.0-1.el8.remi.x86_64                          19/20
  Installing       : php56-php-fpm-5.6.40-25.el8.remi.x86_64              20/20
  Running scriptlet: php56-php-fpm-5.6.40-25.el8.remi.x86_64              20/20
  Running scriptlet: php56-php-pecl-jsonc-1.3.10-3.el8.remi.x86_64        20/20
  Running scriptlet: php56-php-common-5.6.40-25.el8.remi.x86_64           20/20
=====================================================================

  WARNING : PHP 5.6 have reached its "End of Life" in
  January 2019. Even, if this package includes some of
  the important security fix, backported from 7.3, the
  UPGRADE to a maintained version is very strongly RECOMMENDED.

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

  Running scriptlet: php56-php-fpm-5.6.40-25.el8.remi.x86_64              20/20
  Running scriptlet: php56-php-pear-1:1.10.12-5.el8.remi.noarch           20/20
  Running scriptlet: php56-php-fpm-5.6.40-25.el8.remi.x86_64              20/20
  Verifying        : tcl-1:8.6.8-2.el8.x86_64                              1/20
  Verifying        : checkpolicy-2.9-1.el8.x86_64                          2/20
  Verifying        : python3-policycoreutils-2.9-9.el8.noarch              3/20
  Verifying        : policycoreutils-python-utils-2.9-9.el8.noarch         4/20
  Verifying        : python3-audit-3.0-0.17.20191104git1c2f876.el8.x86_    5/20
  Verifying        : environment-modules-4.5.2-1.el8.x86_64                6/20
  Verifying        : python3-libsemanage-2.9-3.el8.x86_64                  7/20
  Verifying        : python3-setools-4.3.0-2.el8.x86_64                    8/20
  Verifying        : scl-utils-1:2.0.2-12.el8.x86_64                       9/20
  Verifying        : php56-3.0-1.el8.remi.x86_64                          10/20
  Verifying        : php56-libzip-1.7.3-2.el8.remi.x86_64                 11/20
  Verifying        : php56-php-cli-5.6.40-25.el8.remi.x86_64              12/20
  Verifying        : php56-php-common-5.6.40-25.el8.remi.x86_64           13/20
  Verifying        : php56-php-fpm-5.6.40-25.el8.remi.x86_64              14/20
  Verifying        : php56-php-pear-1:1.10.12-5.el8.remi.noarch           15/20
  Verifying        : php56-php-pecl-jsonc-1.3.10-3.el8.remi.x86_64        16/20
  Verifying        : php56-php-pecl-zip-1.19.2-1.el8.remi.x86_64          17/20
  Verifying        : php56-php-process-5.6.40-25.el8.remi.x86_64          18/20
  Verifying        : php56-php-xml-5.6.40-25.el8.remi.x86_64              19/20
  Verifying        : php56-runtime-3.0-1.el8.remi.x86_64                  20/20
Installed products updated.

Installed:
  checkpolicy-2.9-1.el8.x86_64
  environment-modules-4.5.2-1.el8.x86_64
  php56-3.0-1.el8.remi.x86_64
  php56-libzip-1.7.3-2.el8.remi.x86_64
  php56-php-cli-5.6.40-25.el8.remi.x86_64
  php56-php-common-5.6.40-25.el8.remi.x86_64
  php56-php-fpm-5.6.40-25.el8.remi.x86_64
  php56-php-pear-1:1.10.12-5.el8.remi.noarch
  php56-php-pecl-jsonc-1.3.10-3.el8.remi.x86_64
  php56-php-pecl-zip-1.19.2-1.el8.remi.x86_64
  php56-php-process-5.6.40-25.el8.remi.x86_64
  php56-php-xml-5.6.40-25.el8.remi.x86_64
  php56-runtime-3.0-1.el8.remi.x86_64
  policycoreutils-python-utils-2.9-9.el8.noarch
  python3-audit-3.0-0.17.20191104git1c2f876.el8.x86_64
  python3-libsemanage-2.9-3.el8.x86_64
  python3-policycoreutils-2.9-9.el8.noarch
  python3-setools-4.3.0-2.el8.x86_64
  scl-utils-1:2.0.2-12.el8.x86_64
  tcl-1:8.6.8-2.el8.x86_64

Complete!

We are also installing the PHP 7.4, the latest available version right now.

[root@apache-01 ~]# dnf install -y php74 php74-php-fpm
Updating Subscription Management repositories.
Last metadata expiration check: 0:22:17 ago on Sun 14 Mar 2021 11:17:18 AM EDT.
Dependencies resolved.
================================================================================
 Package               Arch        Version                 Repository      Size
================================================================================
Installing:
 php74                 x86_64      1.0-3.el8.remi          remi-safe      6.8 k
 php74-php-fpm         x86_64      7.4.16-1.el8.remi       remi-safe      1.6 M
Installing dependencies:
 php74-php-cli         x86_64      7.4.16-1.el8.remi       remi-safe      3.1 M
 php74-php-common      x86_64      7.4.16-1.el8.remi       remi-safe      704 k
 php74-php-json        x86_64      7.4.16-1.el8.remi       remi-safe       80 k
 php74-runtime         x86_64      1.0-3.el8.remi          remi-safe      1.1 M

Transaction Summary
================================================================================
Install  6 Packages

Total download size: 6.6 M
Installed size: 25 M
Downloading Packages:
(1/6): php74-1.0-3.el8.remi.x86_64.rpm          6.9 kB/s | 6.8 kB     00:00
(2/6): php74-php-common-7.4.16-1.el8.remi.x86_6  45 kB/s | 704 kB     00:15
(3/6): php74-php-json-7.4.16-1.el8.remi.x86_64.  48 kB/s |  80 kB     00:01
(4/6): php74-php-fpm-7.4.16-1.el8.remi.x86_64.r  45 kB/s | 1.6 MB     00:36
(5/6): php74-runtime-1.0-3.el8.remi.x86_64.rpm   46 kB/s | 1.1 MB     00:25
(6/6): php74-php-cli-7.4.16-1.el8.remi.x86_64.r  41 kB/s | 3.1 MB     01:16
--------------------------------------------------------------------------------
Total                                            88 kB/s | 6.6 MB     01:17
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Preparing        :                                                        1/1
  Installing       : php74-runtime-1.0-3.el8.remi.x86_64                    1/6
  Running scriptlet: php74-runtime-1.0-3.el8.remi.x86_64                    1/6
  Installing       : php74-php-json-7.4.16-1.el8.remi.x86_64                2/6
  Installing       : php74-php-common-7.4.16-1.el8.remi.x86_64              3/6
  Installing       : php74-php-cli-7.4.16-1.el8.remi.x86_64                 4/6
  Installing       : php74-1.0-3.el8.remi.x86_64                            5/6
  Installing       : php74-php-fpm-7.4.16-1.el8.remi.x86_64                 6/6
  Running scriptlet: php74-php-fpm-7.4.16-1.el8.remi.x86_64                 6/6
  Verifying        : php74-1.0-3.el8.remi.x86_64                            1/6
  Verifying        : php74-php-cli-7.4.16-1.el8.remi.x86_64                 2/6
  Verifying        : php74-php-common-7.4.16-1.el8.remi.x86_64              3/6
  Verifying        : php74-php-fpm-7.4.16-1.el8.remi.x86_64                 4/6
  Verifying        : php74-php-json-7.4.16-1.el8.remi.x86_64                5/6
  Verifying        : php74-runtime-1.0-3.el8.remi.x86_64                    6/6
Installed products updated.

Installed:
  php74-1.0-3.el8.remi.x86_64
  php74-php-cli-7.4.16-1.el8.remi.x86_64
  php74-php-common-7.4.16-1.el8.remi.x86_64
  php74-php-fpm-7.4.16-1.el8.remi.x86_64
  php74-php-json-7.4.16-1.el8.remi.x86_64
  php74-runtime-1.0-3.el8.remi.x86_64

Complete!

You are required to create script wrappers, to call the required version of PHP based on user request.

Execute following commands to create PHP script wrappers.

[root@apache-01 ~]# cat > /var/www/cgi-bin/php56.fcgi << EOF
> #!/bin/bash
> exec /bin/php56-cgi
> EOF

[root@apache-01 ~]# cat > /var/www/cgi-bin/php74.fcgi << EOF
> #!/bin/bash
> exec /bin/php74-cgi
> EOF

Add execution permissions on these script files.

[root@apache-01 ~]# chmod 755 /var/www/cgi-bin/php*

Now add Apache virtual host configurations to run PHP versions websites on different ports. You can also run Virtual Hosts on different Domain names, if you have configured a authoritative DNS server for your network.

Create a configuration for PHP 5.6 based virtual host.

[root@apache-01 ~]# vi /etc/httpd/conf.d/php56.conf

Add following directives in this file.

Listen 8056

<VirtualHost *:8056>
     ServerAdmin root@localhost.com
     ServerName 56.test
     DocumentRoot /var/www/html
     DirectoryIndex index.php index.html
<FilesMatch "\.php$">
  <If "-f %{REQUEST_FILENAME}">
      SetHandler "proxy:unix:/var/opt/remi/php56/run/php-fpm/www.sock|fcgi://localhost"
  </If>
</FilesMatch>
     ScriptAlias /cgi-bin/ "/var/www/cgi-bin/"
     AddHandler php56-fcgi .php
     Action php56-fcgi /cgi-bin/php56.fcgi
 <Directory  "/var/www/html">
    AllowOverride All
  </Directory>
</VirtualHost>

Similarly, Add configurations for PHP 7.4 base virtual host.

[root@apache-01 ~]# vi /etc/httpd/conf.d/php74.conf

Add following directives therein.

Listen 8074

<VirtualHost *:8074>
     ServerAdmin root@localhost.com
     ServerName 74.test
     DocumentRoot /var/www/html
     DirectoryIndex index.php index.html
<FilesMatch "\.php$">
  <If "-f %{REQUEST_FILENAME}">
      SetHandler "proxy:unix:/var/opt/remi/php74/run/php-fpm/www.sock|fcgi://localhost"
  </If>
</FilesMatch>
     ScriptAlias /cgi-bin/ "/var/www/cgi-bin/"
     AddHandler php74-fcgi .php
     Action php74-fcgi /cgi-bin/php74.fcgi
 <Directory  "/var/www/html">
    AllowOverride All
  </Directory>
</VirtualHost>

Create a default index for your website.

[root@apache-01 ~]# vi /var/www/html/index.php

And add following PHP code in this file.

<?php
phpinfo();
?>

Add both virtual host ports to SELinux http_port_t port type. So, the Apache web server can start service on these ports.

[root@apache-01 ~]# semanage port -a -t http_port_t -p tcp 8056
[root@apache-01 ~]# semanage port -a -t http_port_t -p tcp 8074

Allow these service ports in Linux firewall.

[root@apache-01 ~]# firewall-cmd --permanent --add-port={8056,8074}/tcp
success
[root@apache-01 ~]# firewall-cmd --reload
success

Enable and start the Apache and PHP-FPM services.

[root@apache-01 ~]# systemctl enable --now httpd.service php56-php-fpm.service php74-php-fpm.service
Created symlink /etc/systemd/system/multi-user.target.wants/httpd.service â /usr/lib/systemd/system/httpd.service.
Created symlink /etc/systemd/system/multi-user.target.wants/php56-php-fpm.service â /usr/lib/systemd/system/php56-php-fpm.service.
Created symlink /etc/systemd/system/multi-user.target.wants/php74-php-fpm.service â /usr/lib/systemd/system/php74-php-fpm.service.

Open URL http://apache-01.centlinux.com:8056 in a web browser.

01-install-multiple-php-versions-on-rhel-8-phpinfo-5.6

Open URL http://apache-01.centlinux.com:8074 in a web browser.

02-install-multiple-php-versions-on-rhel-8-phpinfo-7.4

 

Conclusion:

In this article, you have learned how to install Multiple PHP versions on Red Hat Enterprise Linux (RHEL) 8. If you found this article too advanced, then you should buy and read Linux Command Line and Shell Scripting Bible by Richard Blum.

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