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php写的一个缓存接口demo,兼容redis和memcache

  3. /**

  4. * 工厂方法模式
  5. * -------------
  6. * @author zhangqian
  7. * @version v1.0
  8. */
  9. //缓存接口
  10. interface cache {
  11. public function init($conf);
  12. public function setVal($key , $val);
  13. public function getVal($key);
  14. public function delVal($key);
  15. public function autoIncreament($key);
  16. }
  17. //mem
  18. class mymemCache implements cache {
  19. //mymem连接
  20. public function init($conf)
  21. {
  22. echo '初始化mymem';
  23. }
  24. public function setVal($key , $val)
  25. {
  26. echo 'mem设置值';
  27. }
  28. public function getVal($key)
  29. {
  30. echo 'mem获取值';
  31. }
  32. public function delVal($key)
  33. {
  34. echo 'mem删除值';
  35. }
  36. public function autoIncreament($key)
  37. {
  38. echo 'mem自增';
  39. }
  40. }
  41. //redis
  42. class redisCache implements cache {
  43. //redis连接
  44. public function init($arr)
  45. {
  46. echo '初始化redis';
  47. }
  48. public function setVal($key , $val)
  49. {
  50. echo 'redis设置值';
  51. }
  52. public function getVal($key)
  53. {
  54. echo 'redis获取值';
  55. }
  56. public function delVal($key)
  57. {
  58. echo 'redis删除值';
  59. }
  60. public function autoIncreament($key)
  61. {
  62. echo 'redis自增';
  63. }
  64. }
  65. class cacheFactory
  66. {
  67. private static $obj;
  68. private static $type;
  69. private static $conf;
  70. private static $allowtype = array('mymem','redis');
  71. private static function getConfig()
  72. {
  73. //include_once('config.php');加载配置文件 获取缓存的类型 及缓存的配置参数
  74. global $_SC;
  75. self::$type = $_SC['cachetype'];//做空值的判断
  76. self::$conf = $_SC['cacheconf'];//做空值的判断
  77. }
  78. //外部调用创建缓存对象
  79. public static function CreateOperation(){
  80. self::getConfig();
  81. try
  82. {
  83. $error = '未知的缓存类型';
  84. if(in_array(self::$type , self::$allowtype))
  85. {
  86. $type = self::$type.'Cache';
  87. self::$obj = new $type;
  88. self::$obj->init(self::$conf);//连接
  89. }
  90. else
  91. throw new Exception($error);
  92. }
  93. catch (Exception $e) {
  94. echo 'Caught exception: ', $e->getMessage(), "\n";
  95. exit;
  96. }
  97. return self::$obj;
  98. }
  99. }

  100. $_SC = array();

  101. $_SC['cachetype'] = 'redis';//mymem
  102. $_SC['cacheconf'] = array();
  104. $cache = cacheFactory::CreateOperation();
  105. $cache->setVal('a',1);
  106. echo '
    ';
  107. $a = $cache->getVal('a');
  108. echo '
    ';
  109. $cache->delVal('a');
  110. ?>