Redis使用Eval多个键值自增的操作实例
在PHP上使用Redis给多个键值进行自增，示例如下：
$set['money']=$this->redis->hIncrByFloat($key,$hour.'_money',$data['money']); $set['ip']=$this->redis->hIncrBy($key,$hour.'_ip',$data['ip']); $set['uv']=$this->redis->hIncrBy($key,$hour.'_uv',$data['uv']); $set['pv']=$this->redis->hIncrBy($key,$hour.'_pv',$data['pv']); $this->redis->hSet($key,$hour,array($data['money'],$data['ip'],$data['uv'],$data['pv']));
如果这样写可能需要请求五次，可以通过Eval方法来一次完成，大大提高效率
$script='localmoney=redis.call("hIncrByFloat",KEYS[1],ARGV[1],ARGV[2]);';
$script.='localip=redis.call("hIncrBy",KEYS[1],ARGV[3],ARGV[4]);';
$script.='localuv=redis.call("hIncrBy",KEYS[1],ARGV[5],ARGV[6]);';
$script.='localpv=redis.call("hIncrBy",KEYS[1],ARGV[7],ARGV[8]);';
$script.='localval=money..","..ip..","..uv..","..pv;';
$script.='redis.call("hSet",KEYS[1],ARGV[2],val);';
$script.='returnval;';
$result=$this->redis->evaluate($script,[$key,$hour,$hour.'_money',$data['money'],$hour.'_ip',$data['ip'],$hour.'_uv',$data['uv'],$hour.'_pv',$data['pv']],2);
var_dump($result);
Redis用的Lua语法，我也不熟悉，这个字符串拼接方式也很特别的是两个点号“..”
money..","..ip..","..uv..","..pv 拼接后 0.01,1,2,3
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