The new detailed SSDB PHP Client API Documentation is now available. It is at this link: http://www.ideawu.com/ssdb/docs/php/.
The document looks like this
zsize
Description
Return the number of pairs of a zset.
Parameters
name - The name of the zset
Return Value
false on error, otherwise an integer of the zset, 0 if the zset does not exist.
Example
$ssdb->zsize('z');
The document is also available in github repository.
