Following is the steps that I have used to install phpMyAdmin on localhost

Download phpMyAdmin Archive

	cd /home/sibi/www
	wget https://files.phpmyadmin.net/phpMyAdmin/4.8.1/phpMyAdmin-4.8.1-all-languages.zip
	unzip phpMyAdmin-4.8.1-all-languages.zip
	mv phpMyAdmin-4.8.1-all-languages phpmyadmin

Then I run the commands below to set the correct permissions for phpMyAdmin to function.

sudo chown -R www-data:www-data /home/sibi/www/phpmyadmin
sudo chmod -R 755 /home/sibi/www/phpmyadmin

When I used above command, phpmyadmin folder displayed with a lock icon

So I tried the below and it worked

sudo chmod 777 -R /home/sibi/www/phpmyadmin

Apache configuration for phpMyAdmin

Created a new Apache configuration file for phpMyAdmin

touch /etc/apache2/conf-available/phpmyadmin.conf	

Open phpmyadmin.conf file in Sublime Text Editor

subl /etc/apache2/conf-available/phpmyadmin.conf

Then added the following in phpmyadmin.conf

	<Directory "/home/sibi/www/phpmyadmin">
	Order Deny,Allow
	Deny from all
	Allow from localhost
	Allow from 127.0.0.1
	Allow from 192.168.1.0
	</Directory>

	Alias /phpmyadmin /home/sibi/www/phpmyadmin
	Alias /phpMyAdmin /home/sibi/www/phpmyadmin

Restarted Apache Service

	sudo service apache2 restart

But when I access http://localhost/phpmyadmin/ showing like the below screenshot

So I uninstalled php

sudo apt-get remove -y --purge php7.0*

and then reinstalled

sudo apt-get install php -y
sudo apt-get install -y php-{bcmath,bz2,intl,gd,mbstring,mcrypt,mysql,zip} && sudo apt-get install libapache2-mod-php  -y

Now I can access phpMyAdmin at http://localhost/phpmyadmin/