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<?php
/**
* 缓存类
*/
namespace base;
class Cache {
/**
* 缓存配置
* @var array
*/
protected $config = array();
/**
* 配置名
* @var string
*/
public $cache = 'default';
/**
* 代理对象
* @var null
*/
public $proxyObj = null;
/**
* 代理缓存时间
* @var integer
*/
public $proxyExpire = 1800;
/**
* 缓存对象
* @var array
*/
protected static $objArr = array();
/**
* 构建函数
* @param string $cache 缓存配置名
*/
public function __construct( $cache = 'default' ) {
if( $cache ){
$this->cache = $cache;
}
$this->config = Config::get('CACHE.' . $this->cache);
if( empty($this->config) || !isset($this->config['CACHE_TYPE']) ) {
throw new \Exception($this->cache.' cache config error', 500);
}
}
/**
* 回调驱动
* @param string $method 回调方法
* @param array $args 回调参数
* @return object
*/
public function __call($method, $args) {
if( !isset(self::$objArr[$this->cache]) ){
$cacheDriver = __NAMESPACE__.'\cache\\' . ucfirst( $this->config['CACHE_TYPE'] ).'Driver';
if( !class_exists($cacheDriver) ) {
throw new \Exception("Cache Driver '{$cacheDriver}' not found'", 500);
}
self::$objArr[$this->cache] = new $cacheDriver( $this->config );
}
if( $this->proxyObj ){ //proxy mode
$key = md5( get_class($this->proxyObj) . '_'.$method.'_' . var_export($args) );
$value = self::$objArr[$this->cache]->get($key);
if( false===$value ){
$value = call_user_func_array(array($this->proxyObj, $method), $args);
self::$objArr[$this->cache]->set($key, $value, $this->proxyExpire);
}
return $value;
}else{
return call_user_func_array(array(self::$objArr[$this->cache], $method), $args);
}
}
}