Help Needed, Classes and such

**immersion** · Dec 28, 2006 12:46

Ok, What i was really wondering is say i made a mysql class. To initiate that class i write a line such as $DB = new mysql(); Thats all fine and dandy however i was wondering if there was a way of checking if that had been initated.

What im trying to get at is i want to have a whole bunch of classes and i need to know if they had been started and if not run that line for the ones that hadn't.

If anyone could help me if this post makes any sense then i would be most grateful.

**kromey** · Dec 28, 2006 12:55

You can check if a particular variable has been assigned a value yet with isset; in your example above you could do

PHP Code:


if(!isset($DB))
    $DB = new mysql();

I don't know of a way to tell if there is an instance of a class already instantiated, though, without creating a new instance of one that has a static variable.