Class public function werkt niet

<?php
function __autoload($class)
{
	require_once($class . '.php');
}

$con = new connection();

$database = 'blaat';
$con->changeDatabase($database);
?>

<?php
function __autoload($class)
{
	require_once($class . '.php');
}
 
$con = new connection();
 
$database = 'blaat';
$con->changeDatabase($database);
?>

catch(Exception $error)
{
die($error->getMessage());
return false;
}

catch(Exception $error)
{
die($error->getMessage());
return false;
}