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Installing PHP 7.2 Instead of PHP 5.4 on Amazon Linux 2

Problem

When you launch a new Amazon Linux 2 AMI server and try to install PHP using the following command:

yum install php

After a successful installation, if you check the version using php -v, you'll see:

PHP 5.4.16 (cli) (built: Oct 31 2019 18:34:05)

However, the latest PHP version is 7.2, and you may want to use this newer version instead.

Solution

You can enable PHP 7.2 via Amazon Linux Extras with the following command:

sudo amazon-linux-extras enable php7.2

Once it is enabled, follow the subsequent instructions to complete the installation:

yum clean metadata
yum install php-cli php-pdo php-fpm php-json php-mysqlnd

That's it. Check the PHP version again using php -v, and it should now display:

PHP 7.2.28 (cli) (built: Mar 2 2020 19:38:11) ( NTS )