Modern version of XMPPHP extlib

Original XMPPHP is no longer maintained
Therefore I've done some optimizations and imported some commits from birkner and zorn-v forks.
None of the forks really looked ready to be adopted...

examples/sendmessage_example.php

@@ -1,20 +1,47 @@
 <?php
 
-// activate full error reporting
-//error_reporting(E_ALL & E_STRICT);
+/**
+ * @file: XMPPHP Send message example
+ *
+ * @info: If this script doesn't work, are you running 64-bit PHP with < 5.2.6?
+ */
+/**
+ * Activate full error reporting
+ * error_reporting(E_ALL & E_STRICT);
+ *
+ * XMPPHP Log levels:
+ *
+ * LEVEL_ERROR   = 0;
+ * LEVEL_WARNING = 1;
+ * LEVEL_INFO    = 2;
+ * LEVEL_DEBUG   = 3;
+ * LEVEL_VERBOSE = 4;
+ */
 
-include 'XMPPHP/XMPP.php';
+require_once __DIR__.'/../vendor/autoload.php';
 
-#Use XMPPHP_Log::LEVEL_VERBOSE to get more logging for error reports
-#If this doesn't work, are you running 64-bit PHP with < 5.2.6?
-$conn = new XMPPHP_XMPP('talk.google.com', 5222, 'username', 'password', 'xmpphp', 'gmail.com', $printlog=false, $loglevel=XMPPHP_Log::LEVEL_INFO);
+$conf = array(
+  'server'   => 'talk.google.com',
+  'port'     => 5222,
+  'username' => 'username',
+  'password' => 'password',
+  'proto'    => 'xmpphp',
+  'domain'   => 'gmail.com',
+  'printlog' => true,
+  'loglevel' => XMPPHP\Log::LEVEL_VERBOSE,
+);
+
+// Easy and simple for access to variables with their names
+extract($conf);
+
+$XMPP = new XMPPHP\XMPP($server, $port, $username, $password, $proto, $domain, $printlog, $loglevel);
 
 try {
-    $conn->connect();
-    $conn->processUntil('session_start');
-    $conn->presence();
-    $conn->message('someguy@someserver.net', 'This is a test message!');
-    $conn->disconnect();
-} catch(XMPPHP_Exception $e) {
+    $XMPP->connect();
+    $XMPP->processUntil('session_start', 10);
+    $XMPP->presence();
+    $XMPP->message('target.user@jabber.domain.com', 'Hello, how are you?', 'chat');
+    $XMPP->disconnect();
+} catch (XMPPHP\Exception $e) {
     die($e->getMessage());
 }