\[code\]<?phpclass abhi{ var $contents="default_abhi"; function abhi($contents) { $this->$contents = $contents; } function get_whats_there() { return $this->$contents; }}$abhilash = new abhi("abhibutu");echo $abhilash->get_whats_there();?>\[/code\]i've initialized variable contents a default and also constructor, why is the value not printing, anything i should correct here?see the error, \[code\]abhilash@abhilash:~$ php5 pgm2.php Fatal error: Cannot access empty property in /home/abhilash/pgm2.php on line 13abhilash@abhilash:~$ \[/code\]