Forum PHP 2017


(PECL gearman >= 0.5.0)

GearmanWorker::addFunctionRegister and add callback function


public bool GearmanWorker::addFunction ( string $function_name , callable $function [, mixed &$context [, int $timeout ]] )

Registers a function name with the job server and specifies a callback corresponding to that function. Optionally specify extra application context data to be used when the callback is called and a timeout.

Elenco dei parametri


The name of a function to register with the job server


A callback that gets called when a job for the registered function name is submitted


A reference to arbitrary application context data that can be modified by the worker function


An interval of time in seconds

Valori restituiti

Restituisce TRUE in caso di successo, FALSE in caso di fallimento.


Example #1 Simple worker making use of extra application context data


# get a gearman worker
$worker= new GearmanWorker(); 

# add the default server (localhost)

# define a variable to hold application data

# add the "reverse" function

# start the worker
while ($worker->work());

reverse_cb($job, &$count

"$count: " strrev($job->workload()); 


Running a client that submits two jobs for the reverse function would have output similar to the following:

1: olleh
2: dlrow

Vedere anche:

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