PDO error: could not connect to DB, error: PDOException: SQLSTATE[HY000] [1045] Access denied for user 'test'@'localhost' (using password: YES) in /var/www/html/example/ajax/database-students.php:10
Stack trace:
#0 /var/www/html/example/ajax/database-students.php(10): PDO->__construct()
#1 /var/www/html/example/ajax/4-ajaxExample.php(2): include('...')
#2 {main}<br />
<b>Warning</b>:  Undefined variable $pdo in <b>/var/www/html/example/ajax/4-ajaxExample.php</b> on line <b>4</b><br />
<br />
<b>Fatal error</b>:  Uncaught Error: Call to a member function prepare() on null in /var/www/html/example/ajax/4-ajaxExample.php:4
Stack trace:
#0 {main}
  thrown in <b>/var/www/html/example/ajax/4-ajaxExample.php</b> on line <b>4</b><br />