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(PHP ActiveX) Async Task Chain (another example)Demonstrates using a task chain to run a sequence of FTP tasks asynchronously.
<?php // All Chilkat classes can be unlocked at once at the beginning of a program // by calling UnlockBundle. It requires a Bundle unlock code. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Global') $chilkatGlob = new COM("Chilkat.Global"); $success = $chilkatGlob->UnlockBundle('Anything for 30-day trial.'); if ($success != 1) { print $chilkatGlob->LastErrorText . "\n"; exit; } // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Ftp2') $ftp = new COM("Chilkat.Ftp2"); $ftp->Hostname = 'ftp.example.com'; $ftp->Username = 'login'; $ftp->Password = 'password'; // Connect and login to the FTP server. $success = $ftp->Connect(); if ($success != 1) { print $ftp->LastErrorText . "\n"; exit; } // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.TaskChain') $taskChain = new COM("Chilkat.TaskChain"); // Create a task to change to the remote directory where the file will be uploaded. // task is a Chilkat.Task $task = $ftp->ChangeRemoteDirAsync('junk'); if ($ftp->LastMethodSuccess == 0) { print $ftp->LastErrorText . "\n"; exit; } // Add this task to the task chain. $success = $taskChain->Append($task); // Create a task to upload a file. $localFilename = 'c:/temp/hamlet.xml'; $remoteFilename = 'hamlet.xml'; // task is a Chilkat.Task $task = $ftp->PutFileAsync($localFilename,$remoteFilename); if ($ftp->LastMethodSuccess == 0) { print $ftp->LastErrorText . "\n"; exit; } // Add this task to the task chain. $success = $taskChain->Append($task); // Start the task chain running in a background thread. // Each task is run one after the other (on the same background thread) until all tasks have completed. // The task chain will stop at the first task that fails. $taskChain->StopOnFailedTask = 1; $success = $taskChain->Run(); if (!$success) { print $taskChain->LastErrorText . "\n"; exit; } // The application is now free to do anything else // while the FTP commands are being run... // For this example, we'll simply sleep and periodically // check to see if the taskchain if finished. while ($taskChain->Finished != 1) { // Sleep 100 ms. $taskChain->SleepMs(100); } // A finished task chain could be one that was canceled, aborted, or truly finished. // If the task chain "completed", then it ran to completion. A "completed" task will // have a StatusInt equal to 7. If the task finished, but was not completed, then it must've // been aborted or canceled: if ($taskChain->StatusInt != 7) { print 'Task did not complete.' . "\n"; print 'task chain status: ' . $taskChain->Status . "\n"; exit; } // If we got to this point, the ChangeRemoteDir and PutFile were successful. // We can visually verify by examining the LastErrorText that was recorded for each // of these method calls.. $numTasks = $taskChain->NumTasks; $taskIdx = 0; while (($taskIdx < $numTasks)) { // task is a Chilkat.Task $task = $taskChain->GetTask($taskIdx); // Examine the status of this task, and the ResultErrorText // (the ResultErrorText is the ftp.LastErrorText captured for FTP method called by the task). // Everything should indicate success. print 'task status: ' . $task->Status . "\n"; print 'task log: ' . $task->ResultErrorText . "\n"; $taskIdx = $taskIdx + 1; } $success = $ftp->Disconnect(); ?> |
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