I have this problem : https://magento.stackexchange.com/questions/95144/redirect-https-to-http-for-catalog-product-pages/95231?noredirect=1#comment127777_95231

so I followed this link : 

https://www.designhaven.co.uk/2013/06/redirecting-secure-https-non-secure-http-magento/ for the question :

but now i am facing this error in "cart" page :

    Fatal error: Call to undefined method Mage_Core_Controller_Varien_Router_Standard::_getCurrentSecureUrl() 

in **app/code/local/Mage/Core/Controller/Varien/Router/Standard.php on line 434**

**Standard.php**

    <?php
    /**
     * Magento
     *
     * NOTICE OF LICENSE
     *
     * This source file is subject to the Open Software License (OSL 3.0)
     * that is bundled with this package in the file LICENSE.txt.
     * It is also available through the world-wide-web at this URL:
     * http://opensource.org/licenses/osl-3.0.php
     * If you did not receive a copy of the license and are unable to
     * obtain it through the world-wide-web, please send an email
     * to [email protected] so we can send you a copy immediately.
     *
     * DISCLAIMER
     *
     * Do not edit or add to this file if you wish to upgrade Magento to newer
     * versions in the future. If you wish to customize Magento for your
     * needs please refer to http://www.magentocommerce.com for more information.
     *
     * @category    Mage
     * @package     Mage_Core
     * @copyright   Copyright (c) 2014 Magento Inc. (http://www.magentocommerce.com)
     * @license     http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
     */
    
    class Mage_Core_Controller_Varien_Router_Standard extends Mage_Core_Controller_Varien_Router_Abstract
    {
        protected $_modules = array();
        protected $_routes = array();
        protected $_dispatchData = array();
    
        public function collectRoutes($configArea, $useRouterName)
        {
            $routers = array();
            $routersConfigNode = Mage::getConfig()->getNode($configArea.'/routers');
            if($routersConfigNode) {
                $routers = $routersConfigNode->children();
            }
            foreach ($routers as $routerName=>$routerConfig) {
                $use = (string)$routerConfig->use;
                if ($use == $useRouterName) {
                    $modules = array((string)$routerConfig->args->module);
                    if ($routerConfig->args->modules) {
                        foreach ($routerConfig->args->modules->children() as $customModule) {
                            if ((string)$customModule) {
                                if ($before = $customModule->getAttribute('before')) {
                                    $position = array_search($before, $modules);
                                    if ($position === false) {
                                        $position = 0;
                                    }
                                    array_splice($modules, $position, 0, (string)$customModule);
                                } elseif ($after = $customModule->getAttribute('after')) {
                                    $position = array_search($after, $modules);
                                    if ($position === false) {
                                        $position = count($modules);
                                    }
                                    array_splice($modules, $position+1, 0, (string)$customModule);
                                } else {
                                    $modules[] = (string)$customModule;
                                }
                            }
                        }
                    }
    
                    $frontName = (string)$routerConfig->args->frontName;
                    $this->addModule($frontName, $modules, $routerName);
                }
            }
        }
    
        public function fetchDefault()
        {
            $this->getFront()->setDefault(array(
                'module' => 'core',
                'controller' => 'index',
                'action' => 'index'
            ));
        }
    
        /**
         * checking if this admin if yes then we don't use this router
         *
         * @return bool
         */
        protected function _beforeModuleMatch()
        {
            if (Mage::app()->getStore()->isAdmin()) {
                return false;
            }
            return true;
        }
    
        /**
         * dummy call to pass through checking
         *
         * @return bool
         */
        protected function _afterModuleMatch()
        {
            return true;
        }
    
        /**
         * Match the request
         *
         * @param Zend_Controller_Request_Http $request
         * @return boolean
         */
        public function match(Zend_Controller_Request_Http $request)
        {
            //checking before even try to find out that current module
            //should use this router
            if (!$this->_beforeModuleMatch()) {
                return false;
            }
    
            $this->fetchDefault();
    
            $front = $this->getFront();
            $path = trim($request->getPathInfo(), '/');
    
            if ($path) {
                $p = explode('/', $path);
            } else {
                $p = explode('/', $this->_getDefaultPath());
            }
    
            // get module name
            if ($request->getModuleName()) {
                $module = $request->getModuleName();
            } else {
                if (!empty($p[0])) {
                    $module = $p[0];
                } else {
                    $module = $this->getFront()->getDefault('module');
                    $request->setAlias(Mage_Core_Model_Url_Rewrite::REWRITE_REQUEST_PATH_ALIAS, '');
                }
            }
            if (!$module) {
                if (Mage::app()->getStore()->isAdmin()) {
                    $module = 'admin';
                } else {
                    return false;
                }
            }
    
            /**
             * Searching router args by module name from route using it as key
             */
            $modules = $this->getModuleByFrontName($module);
    
            if ($modules === false) {
                return false;
            }
    
            // checks after we found out that this router should be used for current module
            if (!$this->_afterModuleMatch()) {
                return false;
            }
    
            /**
             * Going through modules to find appropriate controller
             */
            $found = false;
            foreach ($modules as $realModule) {
                $request->setRouteName($this->getRouteByFrontName($module));
    
                // get controller name
                if ($request->getControllerName()) {
                    $controller = $request->getControllerName();
                } else {
                    if (!empty($p[1])) {
                        $controller = $p[1];
                    } else {
                        $controller = $front->getDefault('controller');
                        $request->setAlias(
                            Mage_Core_Model_Url_Rewrite::REWRITE_REQUEST_PATH_ALIAS,
                            ltrim($request->getOriginalPathInfo(), '/')
                        );
                    }
                }
    
                // get action name
                if (empty($action)) {
                    if ($request->getActionName()) {
                        $action = $request->getActionName();
                    } else {
                        $action = !empty($p[2]) ? $p[2] : $front->getDefault('action');
                    }
                }
    
                //checking if this place should be secure
                $this->_checkShouldBeSecure($request, '/'.$module.'/'.$controller.'/'.$action);
    
                $controllerClassName = $this->_validateControllerClassName($realModule, $controller);
                if (!$controllerClassName) {
                    continue;
                }
    
                // instantiate controller class
                $controllerInstance = Mage::getControllerInstance($controllerClassName, $request, $front->getResponse());
    
                if (!$controllerInstance->hasAction($action)) {
                    continue;
                }
    
                $found = true;
                break;
            }
    
            /**
             * if we did not found any suitable
             */
            if (!$found) {
                if ($this->_noRouteShouldBeApplied()) {
                    $controller = 'index';
                    $action = 'noroute';
    
                    $controllerClassName = $this->_validateControllerClassName($realModule, $controller);
                    if (!$controllerClassName) {
                        return false;
                    }
    
                    // instantiate controller class
                    $controllerInstance = Mage::getControllerInstance($controllerClassName, $request,
                        $front->getResponse());
    
                    if (!$controllerInstance->hasAction($action)) {
                        return false;
                    }
                } else {
                    return false;
                }
            }
    
            // set values only after all the checks are done
            $request->setModuleName($module);
            $request->setControllerName($controller);
            $request->setActionName($action);
            $request->setControllerModule($realModule);
    
            // set parameters from pathinfo
            for ($i = 3, $l = sizeof($p); $i < $l; $i += 2) {
                $request->setParam($p[$i], isset($p[$i+1]) ? urldecode($p[$i+1]) : '');
            }
    
            // dispatch action
            $request->setDispatched(true);
            $controllerInstance->dispatch($action);
    
            return true;
        }
    
        /**
         * Get router default request path
         * @return string
         */
        protected function _getDefaultPath()
        {
            return Mage::getStoreConfig('web/default/front');
        }
    
        /**
         * Allow to control if we need to enable no route functionality in current router
         *
         * @return bool
         */
        protected function _noRouteShouldBeApplied()
        {
            return false;
        }
    
        /**
         * Generating and validating class file name,
         * class and if evrything ok do include if needed and return of class name
         *
         * @return mixed
         */
        protected function _validateControllerClassName($realModule, $controller)
        {
            $controllerFileName = $this->getControllerFileName($realModule, $controller);
            if (!$this->validateControllerFileName($controllerFileName)) {
                return false;
            }
    
            $controllerClassName = $this->getControllerClassName($realModule, $controller);
            if (!$controllerClassName) {
                return false;
            }
    
            // include controller file if needed
            if (!$this->_includeControllerClass($controllerFileName, $controllerClassName)) {
                return false;
            }
    
            return $controllerClassName;
        }
    
    
        /**
         * @deprecated
         * @see _includeControllerClass()
         */
        protected function _inludeControllerClass($controllerFileName, $controllerClassName)
        {
            return $this->_includeControllerClass($controllerFileName, $controllerClassName);
        }
    
        /**
         * Include the file containing controller class if this class is not defined yet
         *
         * @param string $controllerFileName
         * @param string $controllerClassName
         * @return bool
         */
        protected function _includeControllerClass($controllerFileName, $controllerClassName)
        {
            if (!class_exists($controllerClassName, false)) {
                if (!file_exists($controllerFileName)) {
                    return false;
                }
                include $controllerFileName;
    
                if (!class_exists($controllerClassName, false)) {
                    throw Mage::exception('Mage_Core', Mage::helper('core')->__('Controller file was loaded but class does not exist'));
                }
            }
            return true;
        }
    
        public function addModule($frontName, $moduleName, $routeName)
        {
            $this->_modules[$frontName] = $moduleName;
            $this->_routes[$routeName] = $frontName;
            return $this;
        }
    
        public function getModuleByFrontName($frontName)
        {
            if (isset($this->_modules[$frontName])) {
                return $this->_modules[$frontName];
            }
            return false;
        }
    
        public function getModuleByName($moduleName, $modules)
        {
            foreach ($modules as $module) {
                if ($moduleName === $module || (is_array($module)
                        && $this->getModuleByName($moduleName, $module))) {
                    return true;
                }
            }
            return false;
        }
    
        public function getFrontNameByRoute($routeName)
        {
            if (isset($this->_routes[$routeName])) {
                return $this->_routes[$routeName];
            }
            return false;
        }
    
        public function getRouteByFrontName($frontName)
        {
            return array_search($frontName, $this->_routes);
        }
    
        public function getControllerFileName($realModule, $controller)
        {
            $parts = explode('_', $realModule);
            $realModule = implode('_', array_splice($parts, 0, 2));
            $file = Mage::getModuleDir('controllers', $realModule);
            if (count($parts)) {
                $file .= DS . implode(DS, $parts);
            }
            $file .= DS.uc_words($controller, DS).'Controller.php';
            return $file;
        }
    
        public function validateControllerFileName($fileName)
        {
            if ($fileName && is_readable($fileName) && false===strpos($fileName, '//')) {
                return true;
            }
            return false;
        }
    
        public function getControllerClassName($realModule, $controller)
        {
            $class = $realModule.'_'.uc_words($controller).'Controller';
            return $class;
        }
    
        public function rewrite(array $p)
        {
            $rewrite = Mage::getConfig()->getNode('global/rewrite');
            if ($module = $rewrite->{$p[0]}) {
                if (!$module->children()) {
                    $p[0] = trim((string)$module);
                }
            }
            if (isset($p[1]) && ($controller = $rewrite->{$p[0]}->{$p[1]})) {
                if (!$controller->children()) {
                    $p[1] = trim((string)$controller);
                }
            }
            if (isset($p[2]) && ($action = $rewrite->{$p[0]}->{$p[1]}->{$p[2]})) {
                if (!$action->children()) {
                    $p[2] = trim((string)$action);
                }
            }
    
            return $p;
        }
    
        /**
         * Check that request uses https protocol if it should.
         * Function redirects user to correct URL if needed.
         *
         * @param Mage_Core_Controller_Request_Http $request
         * @param string $path
         * @return void
         */
        protected function _checkShouldBeSecure($request, $path='')
    	{
    		if (!Mage::isInstalled() || $request->getPost()) {
    			return;
    		}
     
    		if ($this->_shouldBeSecure($path) && !Mage::app()->getStore()->isCurrentlySecure()) {
    			$url = $this->_getCurrentSecureUrl($request);
     
    			Mage::app()->getFrontController()->getResponse()
    				->setRedirect($url)
    				->sendResponse();
    			exit;
    		} elseif (!$this->_shouldBeSecure($path) && Mage::app()->getStore()->isCurrentlySecure()) {
    			$url = $this->_getCurrentUnsecureUrl($request);
     
    			Mage::app()->getFrontController()->getResponse()
    				->setRedirect($url)
    				->sendResponse();
    			exit;
    		}
    	}
    	
    	protected function _getCurrentUnsecureUrl($request)
    	{
    		if ($alias = $request->getAlias(Mage_Core_Model_Url_Rewrite::REWRITE_REQUEST_PATH_ALIAS)) {
    			return Mage::getBaseUrl('link', false).ltrim($alias, '/');
    		}
     
    		return Mage::getBaseUrl('link', false).ltrim($request->getPathInfo(), '/');
    	}
    
    
        /**
         * Check whether URL for corresponding path should use https protocol
         *
         * @param string $path
         * @return bool
         */
        protected function _shouldBeSecure($path)
        {
            return substr(Mage::getStoreConfig('web/unsecure/base_url'), 0, 5) === 'https'
                || Mage::getStoreConfigFlag('web/secure/use_in_frontend')
                    && substr(Mage::getStoreConfig('web/secure/base_url'), 0, 5) == 'https'
                    && Mage::getConfig()->shouldUrlBeSecure($path);
        }
    }