getting trouble with function and class

[frozenade]

dear all,

i wrote this script, but there's an error with my script.

class firstclass { 

   var $tmpdir; 

   function definetemp() { 
     $this->tmpdir = "tmp"; 
   } 

   function deltree($path) { 
     if (is_dir($path)) { 
        $entries = scandir($path); 
        foreach ($entries as $entry) { 
           if ($entry != '.' && $entry != '..') { 
              deltree($path.DIRECTORY_SEPARATOR.$entry); 
           } 
        } 
     rmdir($path); 
     } 
     else { 
        unlink($path); 
     } 
   } 

} 

$classone = new firstclass(); 

class secondclass { 

   function action(){ 
     global $classone; 
     // ? -> this should do action of deltree function <- ? 
     $classone->deltree($classone->tmpdir);
   } 

   function whatever(){ 
     // ... 
   } 

} 

$classtwo = new secondclass(); 


// call action function 
$classtwo->action(); 

thank you very much for any kind of help.

best regards

[laserlight]

How does it not work?