GearmanWorker::addFunction

(PECL gearman >= 0.5.0)

GearmanWorker::addFunction — Register and add callback function

说明

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.

参数

function_name: The name of a function to register with the job server
function: A callback that gets called when a job for the registered function name is submitted
context: A reference to arbitrary application context data that can be modified by the worker function
timeout: An interval of time in seconds

返回值

成功时返回 TRUE ，或者在失败时返回 FALSE 。

范例

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

  <?php

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

 # add the default server (localhost)
 $worker -> addServer (); 

 # define a variable to hold application data
 $count =  0 ; 

 # add the "reverse" function
 $worker -> addFunction ( "reverse" ,  "reverse_cb" ,  $count );

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

function  reverse_cb ( $job , & $count ) 
{ 
   $count ++; 
  return  " $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

参见

GearmanClient::do() - Run a single task and return a result [deprecated]