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/wp-includes/SimplePie/Cache/ -> Base.php (source)

   1  <?php
   2  /**
   3   * SimplePie
   4   *
   5   * A PHP-Based RSS and Atom Feed Framework.
   6   * Takes the hard work out of managing a complete RSS/Atom solution.
   7   *
   8   * Copyright (c) 2004-2012, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
   9   * All rights reserved.
  10   *
  11   * Redistribution and use in source and binary forms, with or without modification, are
  12   * permitted provided that the following conditions are met:
  13   *
  14   *     * Redistributions of source code must retain the above copyright notice, this list of
  15   *       conditions and the following disclaimer.
  16   *
  17   *     * Redistributions in binary form must reproduce the above copyright notice, this list
  18   *       of conditions and the following disclaimer in the documentation and/or other materials
  19   *       provided with the distribution.
  20   *
  21   *     * Neither the name of the SimplePie Team nor the names of its contributors may be used
  22   *       to endorse or promote products derived from this software without specific prior
  23   *       written permission.
  24   *
  25   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
  26   * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
  27   * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
  28   * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  29   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  30   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  31   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  32   * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  33   * POSSIBILITY OF SUCH DAMAGE.
  34   *
  35   * @package SimplePie
  36   * @version 1.3.1
  37   * @copyright 2004-2012 Ryan Parman, Geoffrey Sneddon, Ryan McCue
  38   * @author Ryan Parman
  39   * @author Geoffrey Sneddon
  40   * @author Ryan McCue
  41   * @link http://simplepie.org/ SimplePie
  42   * @license http://www.opensource.org/licenses/bsd-license.php BSD License
  43   */
  44  
  45  /**
  46   * Base for cache objects
  47   *
  48   * Classes to be used with {@see SimplePie_Cache::register()} are expected
  49   * to implement this interface.
  50   *
  51   * @package SimplePie
  52   * @subpackage Caching
  53   */
  54  interface SimplePie_Cache_Base
  55  {
  56      /**
  57       * Feed cache type
  58       *
  59       * @var string
  60       */
  61      const TYPE_FEED = 'spc';
  62  
  63      /**
  64       * Image cache type
  65       *
  66       * @var string
  67       */
  68      const TYPE_IMAGE = 'spi';
  69  
  70      /**
  71       * Create a new cache object
  72       *
  73       * @param string $location Location string (from SimplePie::$cache_location)
  74       * @param string $name Unique ID for the cache
  75       * @param string $type Either TYPE_FEED for SimplePie data, or TYPE_IMAGE for image data
  76       */
  77  	public function __construct($location, $name, $type);
  78  
  79      /**
  80       * Save data to the cache
  81       *
  82       * @param array|SimplePie $data Data to store in the cache. If passed a SimplePie object, only cache the $data property
  83       * @return bool Successfulness
  84       */
  85  	public function save($data);
  86  
  87      /**
  88       * Retrieve the data saved to the cache
  89       *
  90       * @return array Data for SimplePie::$data
  91       */
  92  	public function load();
  93  
  94      /**
  95       * Retrieve the last modified time for the cache
  96       *
  97       * @return int Timestamp
  98       */
  99  	public function mtime();
 100  
 101      /**
 102       * Set the last modified time to the current time
 103       *
 104       * @return bool Success status
 105       */
 106  	public function touch();
 107  
 108      /**
 109       * Remove the cache
 110       *
 111       * @return bool Success status
 112       */
 113  	public function unlink();
 114  }


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