cache.class.php

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<?php
final class cache {

        private static $cfg;

        private function __construct() {}

        public static function getInstance(array $cfg = array()) {
                if (!self::$cfg)
                        self::$cfg = new config(factory::loadCfg(__CLASS__));
                return factory::get('cache_'.self::$cfg->use, $cfg);
        }

        public static function idRequest(array $prm = array()) {
                $tmp = '';

                config::initTab($prm, array(
                        'uri'=>true,
                        'meth'=>array('get','post','session')
                ));

                if ($prm['uri'] && !empty($_SERVER['REQUEST_URI']))
                        $tmp.= $_SERVER['REQUEST_URI'];

                ksort($prm['meth']);
                foreach($prm['meth'] as $m) {
                        $vars = &$GLOBALS['_'.strtoupper($m)];
                        if (!empty($vars)) {
                                ksort($vars);
                                $tmp.= '@'.$m.'=';
                                foreach($vars as $k=>$v)
                                        $tmp.= $k.':'.$v.'&';
                        }
                }

                if (!empty($tmp))
                        return sha1($tmp);
                else
                        return '';
        }

}