redisのincr操作+時間設定と原子性保証

$key = 'foo_key';
$setTmout = 3600;

$redis = new Redis();
$redis->connect('127.0.0.1', 6379);

$ttl = $redis->ttl($key);

$result = false;

if ($ttl <= 0) {
    //    ，    ，     
    $redis->multi();
    $redis->incr($key);
    $redis->expire($key, $setTmout);
    $ret = $redis->exec();

    $result = isset($ret[0]) ? $ret[0] : false;//      incr   
} else {
    $result = $redis->incr($key);
}

//    $result    


//......


//        ，        ，    redis  
$result = $redis->incr($key);

$ttl = $redis->ttl($key);
 
if ($ttl <= 0) {
    $redis->expire($key, $setTmout);
}