Install PHP and Apache Web Server on Ubuntu

1. Update your OS (Ubuntu 16.04.3 LTS).

sudo apt-get update



2. Install PHP

sudo apt-get install php


3. Command to verify the php version:

php -v

o/p:

PHP 7.0.30-0ubuntu0.16.04.1 (cli) ( NTS )
Copyright (c) 1997-2017 The PHP Group
Zend Engine v3.0.0, Copyright (c) 1998-2017 Zend Technologies
    with Zend OPcache v7.0.30-0ubuntu0.16.04.1, Copyright (c) 1999-2017, by Zend Technologies


4. Install Apache Web Server

sudo apt-get install apache2


5. Command to verify the apache2 version:

apache2 -v

o/p:

Server version: Apache/2.4.18 (Ubuntu)
Server built:   2018-04-18T14:53:04


6. Verify Apache2 running

Open your web browser and type "localhost". You will see "Apache2 Ubuntu Default Page"

 

7. Verify PHP working

  a. Open Terminal and navigate to /var/www/html directory.



  b. Type, sudo nano info.php and press Enter.



  c. Above command will create a new file named "info.php" inside /var/www/html directory. Paste below code snippet and save the file using Ctrl+O, Enter and Ctrl+X keys:

<?php
phpinfo();
?>


  d. Open your browser and enter "localhost/info.php". You will see below page.

  e. If you see a blank page then execute below command and repeat step d again.

sudo apt-get install libapache2-mod-php



8. Verify MySQL database working for PHP

  a. For MySQL database connection, you need to install MySQL database first. 
Please refer to below link:

http://gaurav3ansal.blogspot.com/2018/04/install-mysql-on-ubuntu.html


  b. After installting MySQL database, execute below command:

sudo apt-get install php7.0-mysql


  c. To verify MySQL database connection, edit your previously created info.php file inside /var/www/html directory and enter below code snippet and chane the database_name and database_password and save the file using Ctrl+O, Enter and Ctrl+X keys:

<?php
phpinfo();
echo("<p>PHP is working</p>");
$ses = mysqli_connect("localhost","your_database_username","your_database_password");
if(!$ses){
 echo("<p>Connection to content server failed.</p>");
 exit();
}
echo("<p>Database Connected</p>");
?>


  d. Verify MySQL database connection

Open your browser and enter "localhost/info.php". You will see below page with a line "Database Connected" at the end of the page.















9. Install phpMyAdmin

sudo apt-get install phpmyadmin


10. Verify and open phpMyAdmin

Open your browser and enter "localhost/phpmyadmin". You will see below page.

Note: If you're not able to see the login page for phpmyadmin then execute command "sudo -H nano /etc/apache2/apache2.conf" to open apache.conf file located at "/etc/phpmyadmin" and enter the below line at the end of the file:

Include /etc/phpmyadmin/apache.conf

Note: I is Uppercase in above command 

And restart apache2 service using command:

sudo service apache2 restart


Use your MySQL username and password to login into phpmyadmin.