hLen 命令/方法/函数

Returns the length of a hash, in number of items

取得HASH表的长度。


Parameters

key


Return value

LONG the number of items in a hash, FALSE if the key doesn't exist or isn't a hash.


Example

$redis->delete('h')

$redis->hSet('h', 'key1', 'hello');

$redis->hSet('h', 'key2', 'plop');

$redis->hLen('h'); /* returns 2 */