[Vince]

NEVER use num_rows if the only thing you're intersted in is a count of something. You do not need to process the entire resultset (which could be thousands of records) if you only want one single number.

PHP код:

SELECT COUNT(*) FROM `mybb_users` 


That generates exactly one row with one column. Then retrieve that value like you would any other integer.

Quote:

Originally Posted by YouHack I'm using it to add +1 in UID ( user id ) for each registration...

I'm pretty sure the mybb database uses auto_increment, i.e. it generates the id automatically for each new insert.