Add a task to be run in parallel

GearmanClient::addServers
GearmanClient::addTaskBackground
GearmanClient
PHP Manual

# GearmanClient::addTask

(PECL gearman >= 0.5.0)

GearmanClient::addTask — Add a task to be run in parallel

### Description

public GearmanTask GearmanClient::addTask ( string `$function_name` , string `$workload` [, mixed `&$context` [, string `$unique` ]] )

Adds a task to be run in parallel with other tasks. Call this method for all the tasks to be run in parallel, then call GearmanClient::runTasks() to perform the work. Note that enough workers need to be available for the tasks to all run in parallel.

### Parameters

`function_name`

  A registered function the worker is to execute

`workload`

  Serialized data to be processed

`context`

  Application context to associate with a task

`unique`

  A unique ID used to identify a particular task

### Return Values

A GearmanTask object or `FALSE` if the task could not be added.

### Examples

Example #1 Basic submission of two tasks

`<?php
# Create our gearman client
$gmclient= new GearmanClient();
# add the default job server
$gmclient->addServer();
# set a function to be called when the work is complete
$gmclient->setCompleteCallback("complete");
# add a task to perform the "reverse" function on the string "Hello World!"
$gmclient->addTask("reverse", "Hello World!", null, "1");
# add another task to perform the "reverse" function on the string "!dlroW olleH"
$gmclient->addTask("reverse", "!dlroW olleH", null, "2");
# run the tasks
$gmclient->runTasks();
function complete($task)
{
print "COMPLETE: " . $task->unique() . ", " . $task->data() . "\n";
}
?>`

The above example will output something similar to:

    COMPLETE: 2, Hello World!
    COMPLETE: 1, !dlroW olleH

Example #2 Basic submission of two tasks with passing application context

`<?php
$client = new GearmanClient();
$client->addServer();
# set a function to be called when the work is complete
$client->setCompleteCallback("reverse_complete");
# Add some tasks for a placeholder of where to put the results
$results = array();
$client->addTask("reverse", "Hello World!", &$results, "t1");
$client->addTask("reverse", "!dlroW olleH", &$results, "t2");
$client->runTasks();
# The results should now be filled in from the callbacks
foreach ($results as $id => $result)
echo $id . ": " . $result['handle'] . ", " . $result['data'] . "\n";
function reverse_complete($task, $results)
{
$results[$task->unique()] = array("handle"=>$task->jobHandle(), "data"=>$task->data());
}
?>`

The above example will output something similar to:

    t2: H.foo:21, Hello World!
    t1: H:foo:22, !dlroW olleH

### See Also

- GearmanClient::addTaskHigh() - Add a high priority task to run in parallel
- GearmanClient::addTaskLow() - Add a low priority task to run in parallel
- GearmanClient::addTaskBackground() - Add a background task to be run in parallel
- GearmanClient::addTaskHighBackground() - Add a high priority background task to be run in parallel
- GearmanClient::addTaskLowBackground() - Add a low priority background task to be run in parallel
- GearmanClient::runTasks() - Run a list of tasks in parallel

GearmanClient::addServers
GearmanClient::addTaskBackground
GearmanClient
PHP Manual