How to install letsencrypt SSL certificate on Ubuntu 14.04 apache

Download the Let’s Encrypt Client

Step 1 : sudo add-apt-repository ppa:certbot/certbot

Step 2 : sudo apt-get update

Step 3 : sudo apt-get install python-certbot-apache

Set Up the SSL Certificate

Step 4 : 

sudo certbot --apache -d jaydipkansagra.com
OR
sudo certbot --apache -d jaydipkansagra.com -d www.jaydipkansagra.com

Verifying Certbot Auto-Renewal

Step 5 : sudo certbot renew --dry-run

How to Switch / Change / Downgrade from PHP 7.2 to 7.1 on Ubuntu 16.04 / 18.04 , Apache | PHP

Follow following steps

1. sudo add-apt-repository ppa:ondrej/php
2. sudo apt-get update
3. sudo apt-get install php7.1
4. sudo apt-get install php7.1-cli php7.1-common php7.1-json php7.1-opcache php7.1-mysql php7.1-mbstring php7.1-mcrypt php7.1-zip php7.1-fpm
5. sudo a2dismod php7.2
6. sudo a2enmod php7.1
7. systemctl restart apache2
8. sudo rm /usr/bin/php
9. sudo ln -s /usr/bin/php7.1 /usr/bin/php

How to install PHP, apache and mysql in ununtu 14.04

https://www.howtoforge.com/ubuntu-lamp-server-with-apache2-php5-mysql-on-14.04-lts

https://www.digitalocean.com/community/tutorials/how-to-install-and-secure-phpmyadmin-on-ubuntu-12-04

Enable .htaccess

sudo a2enmod rewrite
sudo service apache2 restart
sudo nano /etc/apache2/sites-available/000-default.conf
<Directory "/var/www/html">
AllowOverride All
</Directory>

sudo service apache2 restart