<?php

return array(
    'hostname' => '',
    'database' => '',
    'username' => '',
    'password' => '',
);

<?php

return [
    'hostname' => '',
    'database' => '',
    'username' => '',
    'password' => '',
];

Change array to short format (PHP 5.4+)
Change array to short format (PHP 5.4+)
