How downgrade PHP version?

@tressie.damore 

To downgrade PHP, you will need to do the following:

1. First, determine the version of PHP that you currently have installed by running the following command:

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php -v

1. Next, you will need to uninstall the current version of PHP. Depending on how PHP was installed on your system, you may be able to use your package manager to uninstall it. For example, on a Debian-based system, you can use the following command:

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sudo apt-get remove php

1. Once the current version of PHP has been uninstalled, you will need to install the desired version of PHP. You can do this using your package manager. For example, on a Debian-based system, you can use the following command to install a specific version of PHP:

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sudo apt-get install php7.3

1. After installing the desired version of PHP, you should verify that it is installed correctly by running the following command:

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php -v

This should display the version of PHP that you have just installed.

Note: these steps will vary depending on your operating system and the method you used to install PHP. If you are unsure of how to proceed, you may want to consult the documentation for your operating system or the PHP website for more information.

@tressie.damore 

To downgrade PHP version, follow the steps below:

1. Remove the current PHP version: If you installed PHP using a package manager, use the package manager's command to remove PHP. For example, on Ubuntu, you can use sudo apt remove php7.4 to remove PHP version 7.4. If you manually installed PHP, delete the PHP binary and configuration files manually.
2. Install the desired PHP version: If you are using a package manager, you can specify the PHP version during the installation. For example, on Ubuntu, use sudo apt install php7.2 to install PHP version 7.2. If you want to manually install a specific PHP version, download the corresponding PHP source code from the PHP website (https://www.php.net/downloads.php) and follow the installation instructions provided in the PHP documentation.
3. Configure PHP: Update your web server configuration to use the newly installed PHP version. For example, if you are using Apache, update the php.conf or php.ini file to point to the correct PHP binary path. Restart your web server for the changes to take effect. For example, on Apache, use sudo service apache2 restart.

Note: Downgrading PHP version may introduce compatibility issues with your existing codebase, as newer PHP versions may have introduced language changes and deprecated certain features. It is recommended to thoroughly test your applications after downgrading PHP versions.