(PHP Extension) Async Methods Returning an Object

Demonstrates how to call an asynchronous method that returns an object. This example reads email from a POP3 server using the Async versions of the Chilkat methods.

Chilkat PHP Downloads PHP Extension for Windows, Linux, MacOS, Alpine Linux, Solaris

<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

// All Chilkat classes can be unlocked at once at the beginning of a program
// by calling UnlockBundle.  It requires a Bundle unlock code.
$chilkatGlob = new CkGlobal();
$success = $chilkatGlob->UnlockBundle('Anything for 30-day trial.');
if ($success != true) {
    print $chilkatGlob->lastErrorText() . "\n";
    exit;
}

$mailman = new CkMailMan();

// Set the POP3 server's hostname
$mailman->put_MailHost('pop.someMailServer.com');

// Set the POP3 login/password and any other requirements..
$mailman->put_PopUsername('myLogin');
$mailman->put_PopPassword('myPassword');
$mailman->put_PopSsl(true);
$mailman->put_MailPort(995);

// Connect to the POP3 server:
// task is a CkTask
$task = $mailman->Pop3BeginSessionAsync();
if ($mailman->get_LastMethodSuccess() == false) {
    print $mailman->lastErrorText() . "\n";
    exit;
}

// Start the background task.
$success = $task->Run();
if (!$success) {
    print $task->lastErrorText() . "\n";

    exit;
}

// Wait for the POP3 connect task to finish.
// The true/false returned by Wait applies to the Wait method call, not the task.
$maxWaitMs = 30000;
$success = $task->Wait($maxWaitMs);
if (!$success or ($task->get_StatusInt() != 7) or ($task->get_TaskSuccess() != true)) {
    if (!$success) {
        // The task.LastErrorText applies to the Wait method call.
        print $task->lastErrorText() . "\n";
    }
    else {
        // The ResultErrorText applies to the underlying task method call (i.e. the Pop3BeginSession)
        print $task->status() . "\n";
        print $task->resultErrorText() . "\n";
    }

    exit;
}

// Get the number of messages in the mailbox.
// task is a CkTask
$task = $mailman->GetMailboxCountAsync();

// To keep the example short, we'll skip handling failures.
// The failures would be handled in the same way as shown above.

$success = $task->Run();
$success = $task->Wait($maxWaitMs);
$numMessages = $task->GetResultInt();

if ($numMessages == 0) {
    exit;
}

$email = new CkEmail();

for ($i = 1; $i <= $numMessages; $i++) {

    // task is a CkTask
    $task = $mailman->FetchByMsgnumAsync($i);
    if ($mailman->get_LastMethodSuccess() == false) {
        print $mailman->lastErrorText() . "\n";
        exit;
    }

    $success = $task->Run();
    $success = $task->Wait($maxWaitMs);
    if (!$success or ($task->get_StatusInt() != 7) or ($task->get_TaskSuccess() != true)) {
        if (!$success) {
            // The task.LastErrorText applies to the Wait method call.
            print $task->lastErrorText() . "\n";
        }
        else {
            // The ResultErrorText applies to the underlying task method call (i.e. the FetchByMsgnum)
            print $task->status() . "\n";
            print $task->resultErrorText() . "\n";
        }

        exit;
    }

    // Each Chilkat object that can be a return value of an asynchronous task will
    // have a method named LoadTaskResult.  The object returned in the underlying
    // asynchronous method call is retrieved by calling LoadTaskResult. 

    // To say it another way: The application will provide a pre-existing object of
    // the desired return type (in this case it is an email object).  This object is
    // loaded by calling LoadTaskResult.  

    $success = $email->LoadTaskResult($task);

    if (!$success) {
        print $email->lastErrorText() . "\n";
        exit;
    }
    else {
        print $email->from() . ': ' . $email->subject() . '\n' . "\n";
    }

}


?>