<?php


class Base_model extends HD_Model
{
    protected $_cache_key_prefix = 'LiChe_bobing';
    public $mc_cache_expire = 600, $table_name;

    function __construct()
    {
        parent::__construct($this->table_name, 'default');
    }

    protected function cache_key($params)
    {
        return $this->_cache_key_prefix . md5($this->table_name . $params);
    }

    /**
     * 对方法的某个结果集做缓存
     * @param $func
     * @param array $param
     * @param string $ttl
     * @param string $type
     * @return mixed
     */
    public function cache($func, $param = array(), $ttl = '', $type = 'mc')
    {
        $cache = &load_cache($type);
        $cache_key = $this->cache_key($type . $func . json_encode($param));
        $ttl > 0 && $this->mc_cache_expire = intval($ttl);
        if (!$rt = $cache->get($cache_key)) {
            $rt = call_user_func_array(array($this, $func), $param);
            $cache->save($cache_key, $rt, $this->mc_cache_expire);
        }
        return $rt;
    }

    /**
     * 删除某方法某个结果集的缓存
     * @param $func
     * @param array $param
     * @param string $type
     * @return mixed
     */
    public function un_cache($func, $param = array(), $type = 'mc')
    {
        $cache = &load_cache($type);
        $cache_key = $this->cache_key($type . $func . json_encode($param));
        return $cache->delete($cache_key);
    }
}