SConfig.php5

<?php
abstract class SConfig
{
    # Store our defaults, our options (overrides for defaults),
    # and our log of not found options/defaults.
    protected static $defaults = array();
    protected static $options = array();
    protected static $notFound = array();


    # Initialize
    # ----------------------------------------------

    public static function initialize() {
        global $COMMON_ROOT, $COMMON_URL;

        # Clear out the existing values in prep for reload
        SConfig::$defaults = array();
        SConfig::$options = array();
        SConfig::$notFound = array();

        # Include the defaults file found in this directory
        self::setDefault('spath.commonURL', $COMMON_URL);
        include($COMMON_ROOT . '/config/serverDefaults.php5');
        if (file_exists($COMMON_ROOT . '/config/serverLocal.php5'))
            include($COMMON_ROOT . '/config/serverLocal.php5');
    }


    # Defaults
    # ----------------------------------------------

    public static function setDefault($key, $value) {
        SConfig::$defaults[$key] = $value;
        return true;
    }

    public static function getDefault($key) {
        if (!isset(SConfig::$defaults[$key])) {
            SConfig::addNotFound($key);
            return null;
        }
        return SConfig::$defaults[$key];
    }

    public static function isDefaultSet($key) {
        if (!isset(SConfig::$defaults[$key])) return false;
        return true;
    }

    # Options
    # ---------------------------------------------

    public static function setOption($key, $value) {
        SConfig::$options[$key] = $value;
        return true;
    }

    public static function getOption($key) {
        if (!isset(SConfig::$options[$key])){
            return SConfig::getDefault($key);
        }
        return SConfig::$options[$key];
    }

    public static function isOptionSet($key) {
        if (!isset(SConfig::$options[$key])) return SConfig::isDefaultSet($key);
        return true;
    }


    # Log of "not found" access misses
    # ---------------------------------------------

    protected static function addNotFound($key) {
        array_push(SConfig::$notFound, $key);
    }

    public static function getNotFound() {
        return SConfig::$notFound;
    }

}
?>

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