Class Phalcon\Cache\Frontend\Output

implements Phalcon\Cache\FrontendInterface

Source on GitHub

Allows to cache output fragments captured with ob_* functions

<?php

*
* use Phalcon\Tag;
* use Phalcon\Cache\Backend\File;
* use Phalcon\Cache\Frontend\Output;
*
* // Create an Output frontend. Cache the files for 2 days
* $frontCache = new Output(
*     [
*         "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 File(
*     $frontCache,
*     [
*         "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 (null === $content) {
*     // Print date and time
*     echo date("r");
*
*     // Generate a link to the sign-up action
*     echo Tag::linkTo(
*         [
*             "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  **beforeStore** (*mixed* $data)

Serializes data before storing them

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

Unserializes data after retrieval