Stop using `global` in PHP

Question

I have a config.php that is included to each page. In config I create an array that looks something like:

$config = array();
$config[\'site_name\         


        

Answer 1

config.php

 'value',
    'key2' => array( 'value', 'can be an', 'array' ),
    'database' => array( "username" => "root", "password" => "root")
                     )
    );
config::set( 'my_config', 'the value' );
?>

config.usage.php

 the config value for password is ' . $database_credentials['password'];

function additionalFunctionality($database_credentials)
{
    echo '
 the config value for password is ' . $database_credentials['password'];
}
?>

config.usage.too.php