One by one steps to Install LAMP (with multiple PHP versions) in a fresh new UBUNTU operating system

LAMP install steps.bash

Step 1: Update your distro
    => `$ sudo apt update`
    
Step 2: Add Repository and again update your distro
    => `$ sudo add-apt-repository ppa:ondrej/php`

Step 3: Install Apache2
    => `$ sudo apt install apache2`

Step 4: Here I am going to install PHP php5.6 and php7.4 versions
    => `$ sudo apt install php5.6 php7.4`
    => `$ sudo service apache2 restart`

Step 5: Lets check the available PHP versions and enabled PHP version [optional]
    => `sudo update-alternatives --config php`

Step 6: Use one of the following command to enable your chose PHP version
    => `$ sudo a2dismod php5.6 && sudo a2enmod php7.4`
	OR,
	=> `$ sudo a2dismod php7.4 && sudo a2enmod php5.6`

Restart the server: `$ sudo systemctl restart apache2`

Step 7: Install MySQL server
    => `$ sudo apt install mysql-common mysql-server`

Step 8: Install the following PHP modules
	=> `$ sudo apt install php5.6-curl`
	=> `$ sudo apt install php7.4-curl`
	=> `$ sudo apt-get install php5.6-mbstring`
	=> `$ sudo apt-get install php7.4-mbstring -y`
	=> `$ sudo phpenmod -v 5.6 gettext`
	=> `$ sudo phpenmod -v 7.4 gettext`
	=> `$ sudo apt install php7.4-mysqli`

Restart the server: `$ sudo systemctl restart apache2`

Step 9: Install PhpMyadmin
    => `$ sudo apt install phpmyadmin -y`
    => `$ sudo phpenmod mbstring`

Restart the server: `$ sudo systemctl restart apache2`

Step 10: Check if soft link is created at `/etc/apache2/conf-available/phpmyadmin.conf`. if not created then create using the below command:

	=> `$ sudo ln -s /etc/phpmyadmin/apache.conf /etc/apache2/conf-available/phpmyadmin.conf`
	=> `$ sudo a2enconf phpmyadmin`

Step 11: If URL not found error (Optional)
    Enter the following command to edit the Apache configuration file.
	=> `$ sudo -H geany /etc/apache2/apache2.conf`
	
	Now add the following line to the end of the file.
	=> `Include /etc/phpmyadmin/apache.conf`
	
Restart the server: `$ sudo systemctl restart apache2`

Step 12: Create a Database User
	=> `$ sudo mysql`

	Create a new user (mohammadshah with password Qwerty) by typing the following command in the terminal.
	=> `$ CREATE USER 'dbroot'@'localhost' IDENTIFIED BY 'MyPassword';`

	Grant all permissions to the created user by running the following query.
	=> `$ GRANT ALL PRIVILEGES ON *.* TO 'dbroot'@'localhost' WITH GRANT OPTION;`
	=> `$ exit`
    
Step 13: Lets move `www` folder from `/var/www/html` to `/home/username/www`

	=> Create `www` folder in user home folder.

	=> Open the `/etc/apache2/sites-enabled/000-default` file, edit documentRoot as `/home/USERNAME/www` from `/var/www/html`.

	=> Open the `/etc/apache2/apache2.conf` file where you would see `<Directory /var/www/>`, Change it to `<Directory /home/USERNAME/www/>`.

	=> `$ sudo service apache2 restart`

Step 14: Enable `.htaccess` module
    => Open `/etc/apache2/apache2.conf` file and edit the "AllowOverride None" to "AllowOverride All" 
	under the `<Directory /var/www/>` or `<Directory /home/USERNAME/www/>`.
	
	=> `$ sudo a2enmod rewrite`	
    => `$ sudo systemctl restart apache2`

Cheers! Hope everything is fine ...