[ticket/15389] Match multiple events in dispatcher in php_exporter

I've also improved some regular expressions

PHPBB3-15389

tests/event/fixtures/event_migration.test

@@ -0,0 +1,30 @@
+<?php
+
+	/**
+	* Modify pm and sender data before it is assigned to the template
+	*
+	* @event core.ucp_pm_view_message
+	* @var	mixed	id			Active module category (can be int or string)
+	* @var	string	mode		Active module
+	* @var	int		folder_id	ID of the folder the message is in
+	* @var	int		msg_id		ID of the private message
+	* @var	array	folder		Array with data of user's message folders
+	* @var	array	message_row	Array with message data
+	* @var	array	cp_row		Array with senders custom profile field data
+	* @var	array	msg_data	Template array with message data
+	* @var 	array	user_info	User data of the sender
+	* @since 3.1.0-a1
+	* @changed 3.1.6-RC1		Added user_info into event
+	*/
+	$vars = array(
+		'id',
+		'mode',
+		'folder_id',
+		'msg_id',
+		'folder',
+		'message_row',
+		'cp_row',
+		'msg_data',
+		'user_info',
+	);
+	extract($phpbb_dispatcher->trigger_event(['core.ucp_pm_view_message', 'core.ucp_pm_view_messsage'], compact($vars)));