create new variables in class how can i change variable names?

I want to create new variable but name as $class.. For example my $class is:

array("veriekle","vericek","sayfala");

I want to include there class in my class. (veriekle.class.php,vericek.class.php,etc.). I can this but how can I create new variable.

If "veriekle".class.php called I want to create new variable as name's "veriekle". This is my class I can include but I can't create new variable.

Class Database
{
    public function __construct($class)
    {
        foreach($class as $class)
        {
            require_once("su开发者_Python百科b/" . $class . ".class.php");
        }
    }
}

$$class = new $class();

it is called variable variaable and isn't recommended, but there it is

public function __construct($classes)
{
    foreach($classes as $class)
    {
        require_once("sub/" . $class . ".class.php");
    }
}