<?php

# create the gearman client
$gmc= new GearmanClient();

# add the default server (localhost)
$gmc->addServer();

# register some callbacks
$gmc->setCreatedCallback("reverse_created");
$gmc->setDataCallback("reverse_data");
$gmc->setStatusCallback("reverse_status");
$gmc->setCompleteCallback("reverse_complete");
$gmc->setFailCallback("reverse_fail");

# set some arbitrary application data
$data['foo'] = 'bar';

# add two tasks
$task= $gmc->addTask("reverse", "foo", $data);
$task2= $gmc->addTaskLow("reverse", "bar", NULL);

# run the tasks in parallel (assuming multiple workers)
if (! $gmc->runTasks())
{
    echo "ERROR " . $gmc->error() . "\n";
    exit;
}

echo "DONE\n";

function reverse_created($task)
{
    echo "CREATED: " . $task->jobHandle() . "\n";
}

function reverse_status($task)
{
    echo "STATUS: " . $task->jobHandle() . " - " . $task->taskNumerator() . 
         "/" . $task->taskDenominator() . "\n";
}

function reverse_complete($task)
{
    echo "COMPLETE: " . $task->jobHandle() . ", " . $task->data() . "\n";
}

function reverse_fail($task)
{
    echo "FAILED: " . $task->jobHandle() . "\n";
}

function reverse_data($task)
{
    echo "DATA: " . $task->data() . "\n";
}

?>

<?php

echo "Starting\n";

# Create our worker object.
$gmworker= new GearmanWorker();

# Add default server (localhost).
$gmworker->addServer();

# Register function "reverse" with the server. Change the worker function to
# "reverse_fn_fast" for a faster worker with no output.
$gmworker->addFunction("reverse", "reverse_fn");

print "Waiting for job...\n";
while($gmworker->work())
{
  if ($gmworker->returnCode() != GEARMAN_SUCCESS)
  {
    echo "return_code: " . $gmworker->returnCode() . "\n";
    break;
  }
}

function reverse_fn($job)
{
  echo "Received job: " . $job->handle() . "\n";

  $workload = $job->workload();
  $workload_size = $job->workloadSize();

  echo "Workload: $workload ($workload_size)\n";

  # This status loop is not needed, just showing how it works
  for ($x= 0; $x < $workload_size; $x++)
  {
    echo "Sending status: " . ($x + 1) . "/$workload_size complete\n";
    $job->sendStatus($x+1, $workload_size);
    $job->sendData(substr($workload, $x, 1));
    sleep(1);
  }

  $result= strrev($workload);
  echo "Result: $result\n";

  # Return what we want to send back to the client.
  return $result;
}

# A much simpler and less verbose version of the above function would be:
function reverse_fn_fast($job)
{
  return strrev($job->workload());
}

?>