1 <?php

     2 

     3 /*

     4  * This file is part of the Assetic package, an OpenSky project.

     5  *

     6  * (c) 2010-2011 OpenSky Project Inc

     7  *

     8  * For the full copyright and license information, please view the LICENSE

     9  * file that was distributed with this source code.

    10  */

    11 

    12 namespace Assetic\Cache;

    13 

    14 /**

    15  * Interface for a cache backend.

    16  *

    17  * @author Kris Wallsmith <kris.wallsmith@gmail.com>

    18  */

    19 interface CacheInterface

    20 {

    21     /**

    22      * Checks if the cache has a value for a key.

    23      *

    24      * @param string $key A unique key

    25      *

    26      * @return Boolean Whether the cache has a value for this key

    27      */

    28     function has($key);

    29 

    30     /**

    31      * Returns the value for a key.

    32      *

    33      * @param string $key A unique key

    34      *

    35      * @return string|null The value in the cache

    36      */

    37     function get($key);

    38 

    39     /**

    40      * Sets a value in the cache.

    41      *

    42      * @param string $key   A unique key

    43      * @param string $value The value to cache

    44      */

    45     function set($key, $value);

    46 

    47     /**

    48      * Removes a value from the cache.

    49      *

    50      * @param string $key A unique key

    51      */

    52     function remove($key);

    53 }