Class **Phalcon\\Cache\\Frontend\\Base64**
==========================================

*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/base64.zep" class="btn btn-default btn-sm">Source on GitHub</a>`

Allows to cache data converting/deconverting them to base64.

This adapter uses the base64_encode/base64_decode PHP's functions

.. code-block:: php

    <?php

    <?php

    // Cache the files for 2 days using a Base64 frontend
    $frontCache = new \Phalcon\Cache\Frontend\Base64(
        [
            "lifetime" => 172800,
        ]
    );

    //Create a MongoDB cache
    $cache = new \Phalcon\Cache\Backend\Mongo(
        $frontCache,
        [
            "server"     => "mongodb://localhost",
            "db"         => "caches",
            "collection" => "images",
        ]
    );

    $cacheKey = "some-image.jpg.cache";

    // Try to get cached image
    $image = $cache->get($cacheKey);

    if ($image === null) {
        // Store the image in the cache
        $cache->save(
            $cacheKey,
            file_get_contents("tmp-dir/some-image.jpg")
        );
    }

    header("Content-Type: image/jpeg");

    echo $image;



Methods
-------

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

Phalcon\\Cache\\Frontend\\Base64 constructor



public  **getLifetime** ()

Returns the cache lifetime



public  **isBuffering** ()

Check whether if frontend is buffering output



public  **start** ()

Starts output frontend. Actually, does nothing in this adapter



public *string* **getContent** ()

Returns output cached content



public  **stop** ()

Stops output frontend



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

Serializes data before storing them



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

Unserializes data after retrieval