how to change php version in ubuntu for apache

In this tutorial we will show you how to change php version.
My current php version is 8.0 and I want 7.1

 

Step 1) Check current PHP Version

$ php -v

 

Step 2) Downgrade Current PHP version

$ sudo a2dismod php8.0

 

Step 3) Upgrade Desired PHP version Ex: 7.1

Note :- before running below command Check Desired PHP version  is already installed in your system or not "  ls /etc/php  "

$ sudo a2enmod php7.1

 

Step 4) Set php version as well for Command Line

$ sudo update-alternatives --set php /usr/bin/php7.1

 

Step 5) Restart apache service for new changes

$ sudo service apache2 restart 

 

Step 6) Now check new PHP version

$ php -v  

  or 

http://localhost/info.php