Login disallowed for security reasons postgresql centos server

1). Open -> /etc/phppgadmin -> config.inc.php

2). change $conf['extra_login_security'] = true; to $conf['extra_login_security'] = false;

// If extra login security is true, then logins via phpPgAdmin with no
// password or certain usernames (pgsql, postgres, root,
administrator) // will be denied. Only set this false once you have
read the FAQ and // understand how to change PostgreSQL’s pg_hba.conf
to enable // passworded local connections.