Add an example for Predis\MonitorContext.

examples/MonitorContext.php

@@ -0,0 +1,38 @@
+<?php
+
+require 'SharedConfigurations.php';
+
+/*
+This is a basic example on how to use the Predis\MonitorContext class.
+
+You can use redis-cli to send commands to the same Redis instance your client is
+connected to, and then type "ECHO QUIT_MONITOR" in redis-cli when you want to
+exit the monitor loop and terminate this script in a graceful way.
+*/
+
+// Create a client and disable r/w timeout on the socket.
+$client = new Predis\Client($single_server + array('read_write_timeout' => 0));
+
+// Use only one instance of DateTime, we will update the timestamp later.
+$timestamp = new DateTime();
+
+foreach (($monitor = $client->monitor()) as $event) {
+    $timestamp->setTimestamp((int) $event->timestamp);
+
+    // If we notice a ECHO command with the message QUIT_MONITOR, we close the
+    // monitor context and then break the loop.
+    if ($event->command === 'ECHO' && $event->arguments === '"QUIT_MONITOR"') {
+        echo "Exiting the monitor loop...\n";
+        $monitor->closeContext();
+        break;
+    }
+
+    echo "* Received {$event->command} on DB {$event->database} at {$timestamp->format(DateTime::W3C)}\n";
+    if (isset($event->arguments)) {
+        echo "    Arguments: {$event->arguments}\n";
+    }
+}
+
+// Say goodbye :-)
+$info = $client->info();
+print_r("Goodbye from Redis v{$info['redis_version']}!\n");