Redis5被弃用方法名和替代方法名

php-redis 5以后废弃了一些方法名

参考：

https://www.drupal.org/project/redis/issues/3068810 this is caused by the update to php-redis 5, apparently only in the PHP 7.3 images. 这是由于更新至 php-redis 5 版本后所造成的，很明显只会在 PHP 7.3 出现

https://github.com/phpredis/phpredis/pull/1588 all aliases are deprecated & delete is an alias for del 所有的别名被弃用 & delete 之前是作为 del 的别名

https://pecl.php.net/package-changelog.php?package=redis&release=5.0.0 Soft deprecate methods that aren’t actually Redis commands [a81b4f2d, 95c8aab9] 被弃用的方法实际上并不是 Redis 本身自带的命令

https://github.com/phpredis/phpredis/pull/1572