Singleton class name as variable

[pata kusik]

I have a question about singleton design pattern and name of class as variable.

I have a config file with value like this:
$config["database_class _name"]="MyProjectData baseHandler"

Then I aslo have class MyProjectDataba seHandler, witch is Singleton, where i handle everything connected with database

And finally I have second class, and I would like to work it like this:

class MyClass{

public function foo(){
$GLOBALS["config"]["database_class _name"]::get_instance( )->query($query ); //should work same as: MyProjectDataba seHandler::get_ instance()->query($query )
}
}

But it doesn't work. May I ask for a right way how to write a name of singleton class as variable?

[johny10151981]

What you need is to create an instant of a class, and you want the class name from variable????

PHP support it.
Simplest Example is

class MyClass
{
 function foo()
 {
  echo __LINE__."<br>";
 }
};
$ClassName="MyClass";
$Object=new $ClassName;
$Object->foo();