If you want to test all job servers you can use the following code:<?php// Create our client object$client= new GearmanClient();// Add available and unavailable servers$client->addServers('127.0.0.1:4730,127.0.0.2:4731');// Test all job servers$success = @$client->ping('data testing');if (!$success) { die('Error: ' . $client->error());}// Sending jobecho $client->doNormal('reverse', 'Hello World!');?>