4 php中redis的使用

1/**redis*/

require_once('z_admin/include/Constants.php');

$co = new Constants();

$redis = new Redis();

$redisHost = $co->REDIS_HOST;

$redisPort = $co->REDIS_PORT;

$redis->connect($redisHost,$redisPort);

$redis->select($co->REDIS_DATABASE);

2

php的redis扩展叫php-redis。网上有php-redis的中文手册，下面给你一个示例：

3清除redis

$redis = new Redis();

$redisHost = '192.168.1.250';

$redisPort = '6379';

$redis->connect($redisHost,$redisPort);

$redis->select(1);

$redis->flushDB();

echo 'redis 1 cleared';

4 加入缓存机制

function get_value_from_cache($db,$redis,$sql){

$key = 'cache_home_'.md5($sql);

$data = $redis->get($key);

if (!$data){

$data = $db->get_a_value($sql);

$redis->setex($key, 3600, $data);

}

return $data;

}