Upgrading PHP on CentOS 6.5 (Final)

Upgrading PHP on CentOS 6.5 can be a bit tricky, since CentOS 6.5 uses an older version of PHP. Here is a general outline of the steps you can follow to upgrade PHP on CentOS 6.5:

1. First, make sure that you have the latest version of the EPEL (Extra Packages for Enterprise Linux) repository installed. You can do this by running the following command:

yum install epel-release

2. Next, you'll need to enable the Remi repository, which contains newer versions of PHP. To enable the Remi repository, you'll need to download and install the appropriate Remi repository package for your system. You can find the packages here:

http://rpms.remirepo.net/wizard/

3. Once you've installed the Remi repository, you can use yum to install the latest version of PHP. For example, to install PHP 7.4, you would run the following command:

yum install php74-php

4. After installing the new version of PHP, you'll need to enable the Remi PHP module (or use --enablerepo=remi-php74 with yum) and update your PHP configuration files to use the new version. This usually involves updating the php.ini file and any other PHP configuration files that are specific to your application.
5. Finally, you'll need to restart your web server (e.g., Apache) to use the new version of PHP. On CentOS 6, use the following command:

service httpd restart

Keep in mind that upgrading PHP can be a complex process, and it's important to test your application thoroughly after the upgrade to make sure everything is working as expected. Note that CentOS 6 reached end-of-life in November 2020, and PHP 7.4 reached end-of-life in November 2021, so this guide is intended for legacy environments only.

I hope this helps! Let me know if you have any questions.