PHP object get value from array -

i have written class this:-

class mail{     function register()     {     return array('message_subject'=>$message_subject,'message_content'=>$message_content);     } }

then in main page, tried:-

echo mail::register();

and main page gave me values of "array".

how shall modify mail::register(); can receive "message_subject" , "message_content" respectively?

assign mail::register() variable , print because retruning array that. array printed print_f not echo

$mail = mail::register(); echo'<pre>'; print_r($mail); echo '</pre>'; ?>

Three