Variables

Hi I was wondering if this is the correct way to reference a variable from a file that has been included inside of a function. Also just general static/global variable usage. For example: -------- Myqsql_functions.php -------- <?php require("config.php") function ach_mysqlCon() { static $con = mysql_connect(global $mysql_host,$mysql_user,$mysql_pass); if (!$con) { die('Could not connect: ' . mysql_error()); } } function ach_mysqlCloseCon() { if($con) { mysql_close($con) } } ?> ---------------------------- And the variables are defined in config.php -------------- config.php -------------- <?php //Mysql vars $mysql_host = "localhost"; $mysql_user = "user@localhost"; $mysql_pass = ""; ?> -------------------------- So my questions are.... will ach_mysqlCloseCon() recognise the $con variable in ach_mysqlCon() as it is declared as static? will ach_mysqlCon() recognise the variables included from config.php as they are declared global? is this all syntax'd properly? Also, how would I, for example, change $mysql_host from a form? Cheers and thanks for any and all assistance.