adds e2e binding example

demo/e2e_bindings.php

@@ -0,0 +1,21 @@
+<?php
+
+include(__DIR__ . '/config.php');
+use PhpAmqpLib\Connection\AMQPConnection;
+
+$source = 'my_source_exchange';
+$dest = 'my_dest_exchange';
+
+$conn = new AMQPConnection(HOST, PORT, USER, PASS, VHOST);
+$ch = $conn->channel();
+
+$ch->exchange_declare($source, 'topic', false, true, false);
+
+$ch->exchange_declare($dest, 'direct', false, true, false);
+
+$ch->exchange_bind($dest, $source);
+
+$ch->exchange_unbind($source, $dest);
+
+$ch->close();
+$conn->close();