PKPTemplateManager::fetch PHP Method

    function fetch($resource_name, $cache_id = null, $compile_id = null, $display = false)
    {
        foreach ($this->_styleSheets as &$list) {
            ksort($list);
        }
        $this->assign('stylesheets', $this->_styleSheets);
        foreach ($this->_javaScripts as &$list) {
            ksort($list);
        }
        $this->assign('scripts', $this->_javaScripts);
        foreach ($this->_htmlHeaders as &$list) {
            ksort($list);
        }
        $this->assign('headers', $this->_htmlHeaders);
        // If no compile ID was assigned, get one.
        if (!$compile_id) {
            $compile_id = $this->getCompileId($resource_name);
        }
        $result = null;
        if ($display == false && HookRegistry::call('TemplateManager::fetch', array($this, $resource_name, $cache_id, $compile_id, &$result))) {
            return $result;
        }
        return parent::fetch($resource_name, $cache_id, $compile_id, $display);
    }