From e4f688fcfdbe997dae4777d7280559c3e9f50dca Mon Sep 17 00:00:00 2001
From: Mikael Nordfeldth <mmn@hethane.se>
Date: Tue, 26 Apr 2016 02:57:14 +0200
Subject: [PATCH] naughty extlib fix (PHP7)

The explode function didn't return empty elements (which split did)
---
 plugins/Xmpp/extlib/XMPPHP/Roster.php | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/plugins/Xmpp/extlib/XMPPHP/Roster.php b/plugins/Xmpp/extlib/XMPPHP/Roster.php
index 69457b22a1..500ff6dcc1 100644
--- a/plugins/Xmpp/extlib/XMPPHP/Roster.php
+++ b/plugins/Xmpp/extlib/XMPPHP/Roster.php
@@ -118,12 +118,13 @@ class Roster {
 	 * @param string $status
 	*/
 	public function setPresence($presence, $priority, $show, $status) {
-		list($jid, $resource) = explode("/", $presence);
+		$parts = explode('/', $presence);
+		$jid = $parts[0];
+		$resource = isset($parts[1]) ? $parts[1] : '';  // apparently we can do '' as an associative array index
 		if ($show != 'unavailable') {
 			if (!$this->isContact($jid)) {
 				$this->addContact($jid, 'not-in-roster');
 			}
-			$resource = $resource ? $resource : '';
 			$this->roster_array[$jid]['presence'][$resource] = array('priority' => $priority, 'show' => $show, 'status' => $status);
 		} else { //Nuke unavailable resources to save memory
 			unset($this->roster_array[$jid]['resource'][$resource]);