How do I install a package (php 7.4 or 7.3 or 7.2) from the Extras Library on an EC2 instance running Amazon Linux 2?

 1.    Connect to your EC2 Linux instance using SSH.

2.    Use the which command to confirm that the amazon-linux-extras package is installed:

# which amazon-linux-extras
/usr/bin/amazon-linux-extras

If the amazon-linux-extras package isn't installed, use yum to install it:

# yum install -y amazon-linux-extras

3.    List the available topics.

Myserver #amazon-linux-extras  0  ansible2                 available    \
        [ =2.4.2  =2.4.6  =2.8  =stable ]
  2  httpd_modules            available    [ =1.0  =stable ]
  3  memcached1.5             available    \
        [ =1.5.1  =1.5.16  =1.5.17 ]
  5  postgresql9.6            available    \
        [ =9.6.6  =9.6.8  =stable ]
  6  postgresql10             available    [ =10  =stable ]
  9  R3.4                     available    [ =3.4.3  =stable ]
 10  rust1                    available    \
        [ =1.22.1  =1.26.0  =1.26.1  =1.27.2  =1.31.0  =1.38.0
          =stable ]
 11  vim                      available    [ =8.0  =stable ]
 18  libreoffice              available    \
        [ =5.0.6.2_15  =5.3.6.1  =stable ]
 19  gimp                     available    [ =2.8.22 ]
 20  docker=latest            enabled      \
        [ =17.12.1  =18.03.1  =18.06.1  =18.09.9  =stable ]
 21  mate-desktop1.x          available    \
        [ =1.19.0  =1.20.0  =stable ]
 22  GraphicsMagick1.3        available    \
        [ =1.3.29  =1.3.32  =1.3.34  =stable ]
 23  tomcat8.5                available    \
        [ =8.5.31  =8.5.32  =8.5.38  =8.5.40  =8.5.42  =8.5.50
          =stable ]
 24  epel                     available    [ =7.11  =stable ]
 25  testing                  available    [ =1.0  =stable ]
 26  ecs                      available    [ =stable ]
 27  corretto8                available    \
        [ =1.8.0_192  =1.8.0_202  =1.8.0_212  =1.8.0_222  =1.8.0_232
          =1.8.0_242  =stable ]
 28  firecracker              available    [ =0.11  =stable ]
 29  golang1.11               available    \
        [ =1.11.3  =1.11.11  =1.11.13  =stable ]
 30  squid4                   available    [ =4  =stable ]
 32  lustre2.10               available    \
        [ =2.10.5  =2.10.8  =stable ]
 33  java-openjdk11           available    [ =11  =stable ]
 34  lynis                    available    [ =stable ]
 35  kernel-ng                available    [ =stable ]
 36  BCC                      available    [ =0.x  =stable ]
 37  mono                     available    [ =5.x  =stable ]
 38  nginx1                   available    [ =stable ]
 39  ruby2.6                  available    [ =2.6  =stable ]
 40  mock                     available    [ =stable ]
 41  postgresql11             available    [ =11  =stable ]
 42  php7.4=latest            enabled      [ =stable ]
 43  livepatch                available    [ =stable ]
 44  python3.8                available    [ =stable ]
 45  haproxy2                 available    [ =stable ]
 46  collectd                 available    [ =stable ]
 47  aws-nitro-enclaves-cli   available    [ =stable ]
 48  R4                       available    [ =stable ]
 49  kernel-5.4               available    [ =stable ]
 50  selinux-ng               available    [ =stable ]
  _  php8.0                   available    [ =stable ]
 52  tomcat9                  available    [ =stable ]
 53  unbound1.13              available    [ =stable ]
 54  mariadb10.5              available    [ =stable ]
 55  kernel-5.10              available    [ =stable ]
 56  redis6                   available    [ =stable ]
 57  ruby3.0                  available    [ =stable ]
 58  postgresql12             available    [ =stable ]
 59  postgresql13             available    [ =stable ]
 60  mock2                    available    [ =stable ]
 61  dnsmasq2.85              available    [ =stable ]
Myserver #

4.    Enable the desired topic. The output shows the commands required for installation. For example, to enable the PHP 7.4 topic, use the following command:

# amazon-linux-extras enable php7.4

5.    Install the topic using yum. For example, to install the PHP 7.2 topic, use the following command:

# yum clean metadata && sudo yum install php-cli php-pdo php-fpm php-json php-mysqlnd

6.    Use the following commands to verify the installation and confirm the software version:

Myserver #yum list installed php-cli php-pdo php-fpm php-json php-mysqlnd
Loaded plugins: extras_suggestions, langpacks, priorities, update-motd
Installed Packages
php-cli.x86_64                                                                  7.4.28-1.amzn2                                                               @amzn2extra-php7.4
php-fpm.x86_64                                                                  7.4.28-1.amzn2                                                               @amzn2extra-php7.4
php-json.x86_64                                                                 7.4.28-1.amzn2                                                               @amzn2extra-php7.4
php-mysqlnd.x86_64                                                              7.4.28-1.amzn2                                                               @amzn2extra-php7.4
php-pdo.x86_64                                                                  7.4.28-1.amzn2                                                               @amzn2extra-php7.4
Myserver #
$ which php
/usr/bin/php        

Myserver #php --version
PHP 7.4.28 (cli) (built: Feb 28 2022 23:38:08) ( NTS )
Copyright (c) The PHP Group
Zend Engine v3.4.0, Copyright (c) Zend Technologies
Myserver #