Mine

function x_check_db() {
    global $x_db, $database;
    if (!mysql_select_db($database)) {
        if (!mysql_query("CREATE DATABASE `$database`;")) {
            echo mysql_error();
        }
    }
    if (!mysql_query("SELECT 1 FROM `phpquser` LIMIT 0")) {
        require_once ('./inc/tableformat.php');
        global $phpQTables;
        foreach ($phpQTables as $sql) {
            if (!mysql_query($sql)) {
                echo mysql_error();
            }
        }
        require_once ('./custom/custom_data.php');
        global $x_data;
        foreach ($x_data as $sql) {
            if (!mysql_query($sql)) {
                echo mysql_error();
            }
        }
    }
}