Question

What I want to do is access the query function in my database class form anther class. Evey time a query is done I track the time it takes and add the the query count, I want to do that for all query’s.

The layout I have now is:

                Global
     -----------------------------
     |                           |
database class          application class
                                 |
                           program class

When the database class starts it connect to the database and does some query’s. The next time its needed is in the program class.

I need to keep the querycount and totaltime variables and add to them. I also would like a simple function call, I don’t want to start the class for each program. It seams like there should be a way to call it at the application class level and be able to use the query function at the program level and to the connect and close at the global level.

I hope this makes sense, I know what I want but I have problems putting it into words…

Answer 1

I’m not sure if I understood your problem correctly but I’d suggest that you introduce static variables into your database class that are then used to store the data that you want the class to “remember”. Like this:

class Database
{
public static $queryCount = 0;
public static $queryDuration = 0;

/*
  ... the rest of your database stuff
*/
}

These two variables are accessible via Database::$queryCount and Database::$queryDuration and will keep their values in the class and not the instantiated objects.

Inside your query methods you can update their values like:

Database::$queryCount++;

and at the end of your script, you can read their contents.