// initialize the results of our 3 "query results" here
$userInfo = $friends = $posts = null;

// This sets up what gearman will callback to as tasks are returned to us.
// The $context helps us know which function is being returned so we can
// handle it correctly.
$client->setCompleteCallback(function(GearmanTask $task,$context) use (&$userInfo,&$friends,&$posts) {
switch ($context)
{
case 'lookup_user':
$userInfo = $task->data();
break;
case 'baconate':
$friends = $task->data();
break;
case 'get_latest_posts_by':
$posts = $task->data();
break;
}
});

// Here we queue up multiple tasks to be execute in as much parallelism as gearmand can give us
$client->addTask('lookup_user','joe@joe.com','lookup_user');
$client->addTask('baconate','baconate');
$client->addTask('get_latest_posts_by','get_latest_posts_by');

echo "Fetching...\n";
$start = microtime(true);
$client->runTasks();
$totaltime = number_format(microtime(true) - $start,2);

echo "Got user info in: $totaltime seconds:\n";
var_dump($userInfo,$friends,$posts);

$worker->addFunction('lookup_user',function(GearmanJob $job) {
// normally you'd so some very safe type checking and query binding to a database here.
// ...and we're gonna fake that.
sleep(3);
return 'The user requested (' . $job->workload() . ') is 7 feet tall and awesome';
});

$worker->addFunction('baconate',function(GearmanJob $job) {
sleep(3);
return 'The user (' . $job->workload() . ') is 1 degree away from Kevin Bacon';
});

$worker->addFunction('get_latest_posts_by',function(GearmanJob $job) {
sleep(3);
return 'The user (' . $job->workload() . ') has no posts,sorry!';
});

while ($worker->work());