Something like CreateByName for objects?

[Mastodont]

Sometimes I need object and know the name of class, but only as string. Following code works:

$class = 'book';
eval('$var = new ' . $class . '();' );

But I would like to use something more elegant, propably:

$var = new CreateByName("book");

Has PHP such a built-in function?

[php_daemon]

$var = new $class(); 

[Mastodont]

Wow. Thanks. It's so simple ...