core.php

<?php

/**
 * Core Class
 *
 * @author Faizan Ayubi
 */

namespace Framework {

    use Framework\Core\Exception as Exception;

    class Core {

        private static $_loaded = array();
        
        private static $_paths = array(
            "/application/libraries",
            "/application/controllers",
            "/application/models",
            "/application",
            ""
        );

        public static function initialize() {
            if (!defined("APP_PATH")) {
                throw new Exception("APP_PATH not defined");
            }

            // fix extra backslashes in $_POST/$_GET
            if (get_magic_quotes_gpc()) {
                $globals = array("_POST", "_GET", "_COOKIE", "_REQUEST", "_SESSION");

                foreach ($globals as $global) {
                    if (isset($GLOBALS[$global])) {
                        $GLOBALS[$global] = self::_clean($GLOBALS[$global]);
                    }
                }
            }

            // start autoloading
            $paths = array_map(function($item) {
                return APP_PATH . $item;
            }, self::$_paths);

            $paths[] = get_include_path();
            set_include_path(join(PATH_SEPARATOR, $paths));
            spl_autoload_register(__CLASS__ . "::_autoload");
        }

        protected static function _clean($array) {
            if (is_array($array)) {
                return array_map(__CLASS__ . "::_clean", $array);
            }
            return stripslashes($array);
        }

        protected static function _autoload($class) {
            $paths = explode(PATH_SEPARATOR, get_include_path());
            $flags = PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE;
            $file = strtolower(str_replace("\\", DIRECTORY_SEPARATOR, trim($class, "\\"))) . ".php";

            foreach ($paths as $path) {
                $combined = $path . DIRECTORY_SEPARATOR . $file;

                if (file_exists($combined)) {
                    include($combined);
                    return;
                }
            } throw new Exception("{$class} not found");
        }

    }

}