gearman中任务的优先级和返回状态实例分析(2)

<?php
$worker = new GearmanWorker();
$worker->addServer('127.0.0.1', 4730);
$worker->addFunction('reverse', function($job) {
  //workload()返回接收的数据
  $data = $job->workload();
  //workloadSize()返回接收数据的字节大小
  $dataSize = $job->workloadSize();
  echo "worker: {$data} ({$dataSize}) \n";

  $tmp = 0;
  $mid = $dataSize / 2;
  for($ix = 0; $ix < $mid; ++$ix) {
    $tmp = $data[$ix];
    $data[$ix] = $data[$dataSize - $ix - 1];
    $data[$dataSize - $ix - 1] = $tmp;

    //这里发送状态，会被client设置的回调reverse_status()接收到
    //状态完成情况的分子与分母
    $job->sendStatus($ix + 1, $mid + 1);
    //发送数据，被reverse_data()接收到
    $job->sendData($data);
    sleep(1);
  }
  return $data;
});
while($worker->work());