Stash::__construct PHP Метод

    public function __construct($calling_from_hook = FALSE)
    {
        $this->EE =& get_instance();
        // load dependencies - make sure the package path is available in case the class is being called statically
        $this->EE->load->add_package_path(PATH_THIRD . 'stash/', TRUE);
        $this->EE->lang->loadfile('stash');
        $this->EE->load->model('stash_model');
        // default site id
        $this->site_id = $this->EE->config->item('site_id');
        // config defaults
        $this->path = $this->EE->config->item('stash_file_basepath') ? $this->EE->config->item('stash_file_basepath') : APPPATH . 'stash/';
        $this->file_sync = $this->_get_boolean_config_item('stash_file_sync', FALSE);
        // default = FALSE
        $this->stash_cookie = $this->EE->config->item('stash_cookie') ? $this->EE->config->item('stash_cookie') : 'stashid';
        $this->stash_cookie_expire = $this->EE->config->item('stash_cookie_expire') ? $this->EE->config->item('stash_cookie_expire') : 0;
        $this->stash_cookie_enabled = $this->_get_boolean_config_item('stash_cookie_enabled');
        // default = TRUE
        $this->default_scope = $this->EE->config->item('stash_default_scope') ? $this->EE->config->item('stash_default_scope') : 'user';
        $this->default_refresh = $this->EE->config->item('stash_default_refresh') ? $this->EE->config->item('stash_default_refresh') : 0;
        // minutes
        $this->limit_bots = $this->_get_boolean_config_item('stash_limit_bots', FALSE);
        // default = FALSE
        // cache pruning can cache stampede mitigation defaults
        $this->prune = $this->_get_boolean_config_item('stash_prune_enabled');
        // default = TRUE
        $this->prune_probability = $this->EE->config->item('stash_prune_probability') ? $this->EE->config->item('stash_prune_probability') : 0.4;
        // percent
        $this->invalidation_period = $this->EE->config->item('stash_invalidation_period') ? $this->EE->config->item('stash_invalidation_period') : 0;
        // seconds
        // permitted file extensions for Stash embeds
        $this->file_extensions = $this->EE->config->item('stash_file_extensions') ? (array) $this->EE->config->item('stash_file_extensions') : array('html', 'md', 'css', 'js', 'rss', 'xml');
        // Support {if var1 IN (var2) }...{/if} style conditionals in Stash templates / tagdata?
        $this->parse_if_in = $this->EE->config->item('stash_parse_if_in') ? $this->EE->config->item('stash_parse_if_in') : FALSE;
        // include query string when using the @URI context (full page caching)?
        $this->include_query_str = $this->EE->config->item('stash_query_strings') ? $this->EE->config->item('stash_query_strings') : FALSE;
        // initialise tag parameters
        if (FALSE === $calling_from_hook) {
            $this->init();
        }
        // fetch the stash session id
        if ($this->stash_cookie_enabled) {
            if (!isset($this->EE->session->cache['stash']['_session_id'])) {
                // do we have a stash cookie?
                if ($cookie_data = $this->_get_stash_cookie()) {
                    // YES - restore session
                    $this->EE->session->cache['stash']['_session_id'] = $cookie_data['id'];
                    // shall we prune expired variables?
                    if ($this->prune) {
                        // probability that pruning occurs
                        $prune_chance = 100 / $this->prune_probability;
                        // trigger pruning every 1 chance out of $prune_chance
                        if (mt_rand(0, $prune_chance - 1) === 0) {
                            // prune variables with expiry date older than right now
                            $this->EE->stash_model->prune_keys();
                        }
                    }
                } else {
                    if ($this->limit_bots) {
                        // Is the user a human? Legitimate bots don't set cookies so will end up here every page load
                        // Humans who accept cookies only get checked when the cookie is first set
                        self::$_is_human = $this->_is_bot() ? FALSE : TRUE;
                    }
                    // NO - let's generate a unique id
                    $unique_id = $this->EE->functions->random();
                    // add to stash array
                    $this->EE->session->cache['stash']['_session_id'] = $unique_id;
                    // create a cookie; store the creation date in the cookie itself
                    $this->_set_stash_cookie($unique_id);
                }
            }
            // create a reference to the session id
            $this->_session_id =& $this->EE->session->cache['stash']['_session_id'];
        } else {
            $this->_session_id = '_global';
        }
    }