Hi Guys, Im new to php.. May i ask some questions? If I want to centralize some of the common variables into a php file, and access them through it, may i know how? Example.. Index.php - Default page Settings.php - Common variables that can be reused by all the php files - Eg. $Database_name, $Database_username, $Database_password Category.php -Have a function to retrieve database information. Index.php include both Settings.php, and category.php by: require_once("Settings.php"); require_once("Category.php"); But when in Category.php i want to use the variable $Database_name i cannot access it.. Is there a offical way to store all the common variable in the common access php file?