getbit 对 key 所储存的字符串值，获取指定偏移量上的位(bit)。

对 key 所储存的字符串值，获取指定偏移量上的位(bit)。
从较大的字符串中返回一个位

Parameters:
string $key
int $offset
Returns:
位值(0或1)

Declared in: Redis
Links: https://redis.io/commands/getbit
Source:
S:/Software/JetBrains/PHPStorm/App/PhpStorm-2020.2.1.win/plugins/php/lib/php.jar!/stubs/redis/Redis.php
getBit on redis.io

<?php
//连接本地的 Redis 服务
$redis = new Redis();
$redis->connect('10.1.3.15', 6379);
$redis->auth('kuaicdn_redis_passwd');
$redis->flushAll();
$ret['exec'][]=$redis->set('list_test1','value1');
$ret['exec'][]=$redis->set('list_test2','value2');
$ret['exec'][]=$redis->set('list_test3','value3');
$ret['exec'][]=$redis->set('list_test4','value4');
$ret['exec'][]=$redis->set('list_test5','hello中国人');
$ret['exec'][]=$redis->set('list_test6','value6',['nx', 'ex' => 10]);
$ret['ret'][]=$redis->get('list_test5');
$ret['ret'][]=$redis->getBit('list_test5',1);
$ret['ret'][]=$redis->getBit('list_test5',2);
$ret['ret'][]=$redis->getBit('list_test5',3);
$ret['ret'][]=$redis->getBit('list_test5',4);
$ret['ret'][]=$redis->getBit('list_test5',5);
$ret['ret'][]=$redis->getBit('list_test5',6);
$ret['ret'][]=$redis->getBit('list_test5',7);
print_r($ret);
?>

返回值：

Array
(
    [exec] => Array
        (
            [0] => 1
            [1] => 1
            [2] => 1
            [3] => 1
            [4] => 1
            [5] => 1
        )
    [ret] => Array
        (
            [0] => hello中国人
            [1] => 1
            [2] => 1
            [3] => 0
            [4] => 1
            [5] => 0
            [6] => 0
            [7] => 0
        )
)

其实我自己也没看懂，哈哈哈2020-9-28 11:17:58