GearmanClient::doBackground

(PECL gearman >= 0.5.0)

GearmanClient::doBackground — Run a task in the background

说明

public GearmanClient::doBackground(string $function, string $workload, ?string $unique = null): string

Runs a task in the background, returning a job handle which can be used to get the status of the running task.

参数

function

由程序自动执行的已注册函数。

workload

被处理的序列化数据。

unique

用于标识特定任务的唯一性 ID。

返回值

The job handle for the submitted task.

示例

示例 #1 Submit and monitor a background job

The worker in this example has an artificial delay introduced to mimic a long running job. The client script periodically checks the status of the running job.

<?php

/* create our object */
$gmclient= new GearmanClient();

/* add the default server */
$gmclient->addServer();

/* run reverse client */
$job_handle = $gmclient->doBackground("reverse", "this is a test");

if ($gmclient->returnCode() != GEARMAN_SUCCESS)
{
echo "bad return code\n";
exit;
}

$done = false;
do
{
sleep(3);
$stat = $gmclient->jobStatus($job_handle);
if (!$stat[0]) // the job is known so it is not done
$done = true;
echo "Running: " . ($stat[1] ? "true" : "false") . ", numerator: " . $stat[2] . ", denominator: " . $stat[3] . "\n";
}
while(!$done);

echo "done!\n";

?>

以上示例的输出类似于：

Running: true, numerator: 3, denominator: 14
Running: true, numerator: 6, denominator: 14
Running: true, numerator: 9, denominator: 14
Running: true, numerator: 12, denominator: 14
Running: false, numerator: 0, denominator: 0
done!

参见