Notice: Use of undefined constant DB_HOST - assumed 'DB_HOST' in C:\xampp\htdocs\blog\system\functions.php on line 31

Question

Getting a couple of errors and can\'t for the life of me see where I am falling down. Below is the functions file

Answer 1

that means DB_HOST is not defined or DB_HOST is not accessible in the current context.

Try place these varibles in the script at the begining instead of include('config.php');

define('DB_HOST','mysql:host=localhost;dbname=blog');
define('DB_USER','root');
define('DB_PASS','');

Answer 2

The constants you are using for Host, User and Password haven't been defined yet. There's probably something wrong with your config.php.

Answer 3

Use particular terms in place of reference...

For e.g.

$dbh = new PDO(DB_HOST, DB_USER, DB_PASS);

Change to...

$dbh = new PDO('localhost', 'root', '')

That would work.