add a new function to save a message flash in the session data to be displayed...

add a new function to save a message flash in the session data to be displayed on the next page load (e.g. when we're doing post/redirect/get)

lib/error.php

@@ -23,6 +23,13 @@ function message_flash($message) {
     $messages['info'][] = $message;
 }
 
+function message_flash_postponed($message) {
+	global $session;
+	$session->data['messages']['info'][] = $message;
+	$session->save(); 
+}
+
+
 set_error_handler("handle_messages", (E_USER_ERROR | E_USER_WARNING | E_USER_NOTICE));
 
 // empty messages array was causing PHP to spew notices

lib/session.php

@@ -153,6 +153,18 @@ private $datahash='';		// hash of data field
 
 		// update time stamp
 		$DB->Execute( "update {$this->table} set lastseen=NOW() where hash=?", array($this->token));
+
+		// check to see if there any messages stored for this user
+		if (isset($this->data['messages'])) {
+			global $messages;
+			if (is_array($messages)) {
+				$messages += $this->data['messages']; 
+			} else {
+				$messages = $this->data['messages'];
+			}
+			unset($this->data['messages']);
+			$this->save();
+		}
 	}
 	
 	// generate a string suitable to be used as a session ID