trouble connecting to mysql with pdo

Question

I am trying to connect to MySQL database with pdo but keep getting this error:

Warning: Use of undefined constant username - assumed 'username' (this will throw an Error in a future version of PHP) in C:\xampp\htdocs\first\index.php on line 2

Warning: Use of undefined constant password - assumed 'password' (this will throw an Error in a future version of PHP) in C:\xampp\htdocs\first\index.php on line 2

Fatal error: Uncaught PDOException: SQLSTATE[HY000] [1045] Access denied for user 'username'@'localhost' (using password: YES) in C:\xampp\htdocs\first\index.php:2 Stack trace: #0 C:\xampp\htdocs\first\index.php(2): PDO->__construct('mysql:host=loca...', 'username', 'password') #1 {main} thrown in C:\xampp\htdocs\first\index.php on line 2

here's my code:

<?php
$pdo = new PDO('mysql:host=localhost;port=3306;dbname=dbname', username, password);
 ?>

Answer 1

It's because the username and password are not variables. They are missing the $

 <?php $username = 'myUsername'; $password = 'myPassword'; $pdo = new PDO('mysql:host=localhost;port=3306;dbname=dbname', $username, $password); ?>