GearmanClient::setCreatedCallback

    (PECL gearman >= 0.5.0)

    GearmanClient::setCreatedCallback — Set a callback for when a task is queued

    说明

    public GearmanClient::setCreatedCallback(callable $callback): bool

    Sets a callback function to be called when a task is received and queued by the Gearman job server.

    注意:

    The callback will only be triggered for tasks that are added (e.g. by calling GearmanClient::addTask()) after calling this method.

    参数

    callback

    调用的函数或方法。应该返回有效的 Gearman 返回值。

    如果没有返回语句，默认是 GEARMAN_SUCCESS。

    callback(GearmanTask $task, mixed $context): int
    task

    调用此 callback 的任务。

    context

    Whatever has been passed to GearmanClient::addTask() (or equivalent method) as context.

    返回值

    成功时返回 true， 或者在失败时返回 false。

    参见

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    用户贡献的备注 2 notes

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    stanislav dot reshetnev at gmail dot com
    10 years ago
    Callback can accept not only GearmanTask object, but it can recieve a variable from GearmanClient::addTask():

    <?php
    $client     = new GearmanClient();
    $client->addServer();

    $client->setCreatedCallback(function(GearmanTask $task, $some_info) {
    // now we have $some_info
    // ...
    });

    $client->addTask($function_name, $workload, "some info");
    ?>

    So, we can send to our anonymous function something like $workload, because we can't get it from GearmanTask object. It may be usefull for logging of tasks queuing.
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    Karl Rixon
    10 years ago
    Contrary to the documentation, this callback accepts an instance of \GearmanTask, not \GearmanClient.
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