Php/docs/gearman.examples-reverse
Basic usage
Example #1 Basic Gearman client and worker
This example shows a very simple client and worker. The client sends a string to the job server, and the worker reverses the string and sends it back. The job is performed synchronously.
<?php# Create our client object.$gmclient= new GearmanClient();# Add default server (localhost).$gmclient->addServer();echo "Sending job\n";# Send reverse jobdo{ $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: echo "Success: $result\n"; break; default: echo "RET: " . $gmclient->returnCode() . "\n"; exit; }}while($gmclient->returnCode() != GEARMAN_SUCCESS);?>
<?phpecho "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){ 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, $workload_size); sleep(1); } $result= strrev($workload); echo "Result: $result\n"; # Return what we want to send back to the client. return $result;}# A much simpler and less verbose version of the above function would be:function reverse_fn_fast($job){ return strrev($job->workload());}?>
The above example will output something similar to:
% php reverse_worker.php Starting Waiting for job... Received job: H:foo.local:36 Workload: Hello! (6) Sending status: 1/6 complete Sending status: 2/6 complete Sending status: 3/6 complete Sending status: 4/6 complete Sending status: 5/6 complete Sending status: 6/6 complete Result: !olleH
% php reverse_client.php Starting Sending job Status: 1/6 complete Status: 2/6 complete Status: 3/6 complete Status: 4/6 complete Status: 5/6 complete Status: 6/6 complete Success: !olleH
