Whatever you are counting should be +1

in other words

$val = 0;

$val = $val +1;

then it will increment by 1 each loop.  I dont know what that function does.  But  if the count is stored in the db thats fine, if not then youll either need to create a table to store it in or use $_SESSION variable to store it per visit or maybe with a cookie.  But db is better depending on what your doing.