Runs a single task and returns a string representation of the result. It is up to the GearmanClient and GearmanWorker to agree on the format of the result.
A registered function the worker is to execute
Serialized data to be processed
A unique ID used to identify a particular task
A string representing the results of running a task.
<?php ?>
<?php # Client code echo "Starting\n"; # Create our client object. $gmclient= new GearmanClient(); # Add default server (localhost). $gmclient->addServer(); echo "Sending job\n"; $result = $gmclient->doNormal("reverse", "Hello!"); echo "Success: $result\n"; ?>
<?php echo "Starting\n"; # Create our worker object. $gmworker= new GearmanWorker(); # Add default server (localhost). $gmworker->addServer(); # Register function "reverse" with the server. Change the worker function to # "reverse_fn_fast" for a faster worker with no output. $gmworker->addFunction("reverse", "reverse_fn"); print "Waiting for job...\n"; while($gmworker->work()) { if ($gmworker->returnCode() != GEARMAN_SUCCESS) { echo "return_code: " . $gmworker->returnCode() . "\n"; break; } } function reverse_fn($job) { return strrev($job->workload()); } ?>
The above example will output something similar to:
Starting Sending job Success: !olleH
A job is submitted and the script loops to retrieve status information. The worker has an artificial delay which results in a long running job and sends status and data as processing occurs. Each subsequent call to GearmanClient::doNormal() produces status information on the running job.
<?php # Client code # Create our client object. $gmclient= new GearmanClient(); # Add default server (localhost). $gmclient->addServer(); echo "Sending job\n"; # Send reverse job do { $result = $gmclient->doNormal("reverse", "Hello!"); # Check for various return packets and errors. switch($gmclient->returnCode()) { case GEARMAN_WORK_DATA: echo "Data: $result\n"; break; case GEARMAN_WORK_STATUS: list($numerator, $denominator)= $gmclient->doStatus(); echo "Status: $numerator/$denominator complete\n"; break; case GEARMAN_WORK_FAIL: echo "Failed\n"; exit; case GEARMAN_SUCCESS: break; default: echo "RET: " . $gmclient->returnCode() . "\n"; echo "Error: " . $gmclient->error() . "\n"; echo "Errno: " . $gmclient->getErrno() . "\n"; exit; } } while($gmclient->returnCode() != GEARMAN_SUCCESS); echo "Success: $result\n"; ?>
<?php # Worker code echo "Starting\n"; # Create our worker object. $gmworker= new GearmanWorker(); # Add default server (localhost). $gmworker->addServer(); # Register function "reverse" with the server. $gmworker->addFunction("reverse", "reverse_fn"); print "Waiting for job...\n"; while($gmworker->work()) { if ($gmworker->returnCode() != GEARMAN_SUCCESS) { echo "return_code: " . $gmworker->returnCode() . "\n"; break; } } function reverse_fn($job) { echo "Received job: " . $job->handle() . "\n"; $workload = $job->workload(); $workload_size = $job->workloadSize(); echo "Workload: $workload ($workload_size)\n"; # This status loop is not needed, just showing how it works for ($x= 0; $x < $workload_size; $x++) { echo "Sending status: " + $x + 1 . "/$workload_size complete\n"; $job->sendStatus($x+1, $workload_size); $job->sendData(substr($workload, $x, 1)); sleep(1); } $result= strrev($workload); echo "Result: $result\n"; # Return what we want to send back to the client. return $result; } ?>
The above example will output something similar to:
Worker output:
Starting Waiting for job... Received job: H:foo.local:106 Workload: Hello! (6) 1/6 complete 2/6 complete 3/6 complete 4/6 complete 5/6 complete 6/6 complete Result: !olleH
Client output:
Starting Sending job Status: 1/6 complete Data: H Status: 2/6 complete Data: e Status: 3/6 complete Data: l Status: 4/6 complete Data: l Status: 5/6 complete Data: o Status: 6/6 complete Data: ! Success: !olleH
GearmanClient::doBackground() -
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