Adding directly to Table

[Anon]

Im making a forum in PHP3 and mySQL, and i want to have records of how many posts a user has, so every time a user those a post the $post variable increments in one and goes to the Table on the database.
Is there a way to not to select the post info from the database, then incrementing, and the getting the value again to the database !? im saying something like(im gessing) "increment posts on_table where condition='$condition'";
Anything can help, any ideas,..sorry for my english ....

[Anon]

update table set column = column + 1 where some_column = some_value;