Class **Phalcon\\Cache\\Frontend\\Output**
==========================================

*implements* :doc:`Phalcon\\Cache\\FrontendInterface <Phalcon_Cache_FrontendInterface>`

.. role:: raw-html(raw)
   :format: html

:raw-html:`<a href="https://github.com/phalcon/cphalcon/blob/master/phalcon/cache/frontend/output.zep" class="btn btn-default btn-sm">Source on GitHub</a>`

Allows to cache output fragments captured with ob_* functions  

.. code-block:: php

    <?php

     <?php
    
     //Create an Output frontend. Cache the files for 2 days
     $frontCache = new \Phalcon\Cache\Frontend\Output(array(
       "lifetime" => 172800
     ));
    
     // Create the component that will cache from the "Output" to a "File" backend
     // Set the cache file directory - it's important to keep the "/" at the end of
     // the value for the folder
     $cache = new \Phalcon\Cache\Backend\File($frontCache, array(
         "cacheDir" => "../app/cache/"
     ));
    
     // Get/Set the cache file to ../app/cache/my-cache.html
     $content = $cache->start("my-cache.html");
    
     // If $content is null then the content will be generated for the cache
     if ($content === null) {
    
         //Print date and time
         echo date("r");
    
         //Generate a link to the sign-up action
         echo Phalcon\Tag::linkTo(
             array(
                 "user/signup",
                 "Sign Up",
                 "class" => "signup-button"
             )
         );
    
         // Store the output into the cache file
         $cache->save();
    
     } else {
    
         // Echo the cached output
         echo $content;
     }



Methods
-------

public  **__construct** ([*array* $frontendOptions])

Phalcon\\Cache\\Frontend\\Output constructor



public  **getLifetime** ()

Returns the cache lifetime



public  **isBuffering** ()

Check whether if frontend is buffering output



public  **start** ()

Starts output frontend. Currently, does nothing



public *string*  **getContent** ()

Returns output cached content



public  **stop** ()

Stops output frontend



public *string*  **beforeStore** (*mixed* $data)

Serializes data before storing them



public *mixed*  **afterRetrieve** (*mixed* $data)

Unserializes data after retrieval