# Downgrade PHP8.1 to PHP8.0 or PHP7.4 on Ubuntu 22.04
Ubuntu 22.04 comes with `PHP 8.1`. This article describes how to change this and install and set as default the version `8.0` or `7.4`.
# Install PHP Version
Install the required dependencies.
```
sudo apt install software-properties-common ca-certificates lsb-release apt-transport-https
```
Add the required PPA
```
LC_ALL=C.UTF-8 sudo add-apt-repository ppa:ondrej/php
```
Update the Apt package manager
```
sudo apt update
```
Install PHP 8.0 and all the PHP modules for Drupal 9.
```
sudo apt install php8.0
sudo apt install php8.0-mysql php8.0-mbstring php8.0-xml php8.0-curl php8.0-gd
```
# Switch PHP versions and enable PHP 8.0
Set 8.09 as the default PHP version for CLI and Apache.
## **Command Line PHP**
```
sudo update-alternatives --config php
```
Select php8.0 from the list with the available options:
```
There are 2 choices for the alternative php (providing /usr/bin/php).Selection Path Priority Status
------------------------------------------------------------
0 /usr/bin/php8.1 81 auto mode
* 1 /usr/bin/php8.0 80 manual mode
2 /usr/bin/php8.1 81 manual modePress to keep the current choice[*], or type selection number:
```
## **Apache PHP**
Disable PHP 8.1
```
sudo a2dismod php8.1
sudo systemctl restart apache2
```
Enable PHP 8.0
```
sudo a2enmod php8.0
sudo systemctl restart apache2
```
## Verify PHP Version
```
php -vOutput
PHP 8.0.18 (cli) (built: May 1 2022 04:42:09) ( NTS )
Copyright (c) The PHP Group
Zend Engine v4.0.18, Copyright (c) Zend Technologies
with Zend OPcache v8.0.18, Copyright (c), by Zend Technologies
```
For verifying the PHP version Apache uses, specify the configururation `.ini` file.
```
php -c /etc/php/apache2/php.ini -v
```