install postgresql and phppgadmin client
sudo apt update
sudo apt -y upgrade
sudo apt install postgresql postgresql-client
sudo su - postgres
psql -c "alter user postgres with password 'root'"
sudo apt -y install phppgadmin php-pgsql
sudo vim /etc/phppgadmin/config.inc.php
# Set extra_login_security to false
conf['extra_login_security'] = false;
sudo systemctl restart postgresql apache2
# Visit
localhost/phppgadmin