(PECL gearman >= 0.5.0)
GearmanClient::doBackground — Run a task in the background
$function_name
, string $workload
[, string $unique
] ) : stringRuns a task in the background, returning a job handle which can be used to get the status of the running task.
function_name
Die registrierte Funktion, die der Worker ausführen soll
workload
Serialisierte Daten, die verarbeitet werden sollen
unique
Eine eindeutige ID, die einen bestimmten Task identifiziert
The job handle for the submitted task.
Beispiel #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";
?>
Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:
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!