$settingsArray['hide'] = $db->real_escape_string($_POST['hide-info']);
$settingsArray['width'] = $db->real_escape_string($_POST['width']);
$settingsArray['background'] = $db->real_escape_string(strip_tags($_POST['background']));
$settingsArray = serialize($settingsArray);

a:3:{s:4:"hide";s:1:"1";s:5:"width";s:4:"1000";s:10:"background";s:8:"#8100b1;";}