广州车展缓存

$guangzhou_tmp_key = 'guangzhouchezhan';
$guangzhou_arr = $memcache->get($guangzhou_tmp_key);
if(!$guangzhou_arr){
    $guangzhou_data = curl('http://hezuo.xcar.com.cn/chezhan/2014gz_interface.php');
    $guangzhou_arr=unserialize($guangzhou_data);
    $memcache->set($guangzhou_tmp_key,$guangzhou_arr,MEMCACHE_COMPRESSED,3600*6);
}