Untitled

php -r '$link=@pg_connect("host=fakehost.edu port=5432 dbname=db user=user password=totallynotthepassword");if($link){echo "connected";} else { echo "no dice";}'

<html>
 <head>
  <title>PHP Test</title>
 </head>
 <body>
 <?php
$link=@pg_connect("host=fakehost.edu port=5432 dbname=db user=user password=totallynotthepassword");if($link){echo "connected";} else { echo "no dice";}
?>
 </body>
</html>

sudo setsebool -P httpd_can_network_connect_db on