A low priority task is included among two other tasks. A single worker
is available, so that tasks are run one at a time, with the low priority
task run last.
<?php
# create the gearman client
$gmc= new GearmanClient();
# add the default job server
$gmc->addServer();
# set the callback for when the job is complete
$gmc->setCompleteCallback("reverse_complete");
# add tasks, one of which is low priority
$task= $gmc->addTask("reverse", "Hello World!", null, "1");
$task= $gmc->addTaskLow("reverse", "!dlroW olleH", null, "2");
$task= $gmc->addTask("reverse", "Hello World!", null, "3");
if (! $gmc->runTasks())
{
echo "ERROR " . $gmc->error() . "\n";
exit;
}
echo "DONE\n";
function reverse_complete($task)
{
echo "COMPLETE: " . $task->unique() . ", " . $task->data() . "\n";
}
?>
The above example will output
something similar to:
COMPLETE: 3, !dlroW olleH
COMPLETE: 1, !dlroW olleH
COMPLETE: 2, Hello World!
DONE
GearmanClient::addTaskHighBackground
GearmanClient