PHP: Error handling without throwing an exception -

i'm sending multiple emails php application, , want inform user of emails failed sent.

what elegant way error handling when

• i don't want throw exception terminates sending of remaining emails
• the call goes through several method calls

what want $notificationsucceeded suggestion::notifydeletiontoall() suggestioncontroller somehow nicely notifications.

the depth of call stack made me doubt if returning through methods elegant way, when have return value suggestion::cancel().

is there better way?

controller:

class suggestioncontroller {     function cancelsuggestion($suggestionid)     {         $suggestion = new suggestion();         $suggestion->fetch($suggestionid);          $suggestiondeleted = $suggestion->cancel();          print json_encode(array(             'status' => 'ok',             'suggestiondeleted' => $suggestiondeleted,         ));     } } 

suggestion class:

class suggestion {      /**      * cancels membership of current user in suggestion      */     public function cancel()     {         $this->cancelmembership();          if (!$this->hasacceptedmembers()) {             $this->deleteandnotify();             return true;         }          return false;     }      /**      * deletes suggestion , notifies users in      */     private function deleteandnotify()     {         $this->notifydeletiontoall();         db::inst()->query("delete suggestions id = {$this->id}");     }      /**      * notifies deletion of suggestion members (users in suggestion)      */     private function notifydeletiontoall()     {         $result = db::inst()->query("select user_id suggestions_users             suggestion_id = {$this->id}");         while ($member_id = db::inst()->fetchfirstfield($result)) {             $member = new user();             $member->fetch($member_id);             $notificationsucceeded = $member->notifysuggestiondeleted($this);         }     } } 

i can't understand question clearly. hope you

$successfully_sent_arr = array(); $failure_notsent_arr   = array(); if($mail->send()) {     $successfully_sent_arr[] = $to_email;     //once last loop occurs, update array in database } else {     $failure_notsent_arr[] = $to_email;     //once last loop occurs, update array in database }