(PHP ActiveX) Async Methods Returning an String

Demonstrates how to call an asynchronous method that returns a string. This example sends an HTTPS GET request to a URL and gets the HTML response.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Http')
$http = new COM("Chilkat.Http");

// task is a Chilkat.Task
$task = $http->QuickGetStrAsync('https://www.chilkatsoft.com/helloWorld.html');
if ($http->LastMethodSuccess == 0) {
    print $http->LastErrorText . "\n";
    exit;
}

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

    exit;
}

// The application is now free to do anything else

// For this example, we'll simply sleep and periodically
// check to see if the HTTPS GET if finished.
while ($task->Finished != 1) {
    // Sleep 100 ms.
    $task->SleepMs(100);
}

// A finished task could be one that was canceled, aborted, or truly finished.  

// If the task was "canceled", it was canceled prior to actually starting.  This could
// happen if the task was canceled while waiting in a thread pool queue to be scheduled by Chilkat's
// background thread pool scheduler.  

// If the task was "aborted", it indicates that it was canceled while running in a background thread.  
// The ResultErrorText will likely indicate that the task was aborted.

// If the task "completed", then it ran to completion, but the actual success/failure of the method
// is determined by the result obtained via a GetResult* method.  (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 ($task->StatusInt != 7) {
    print 'Task did not complete.' . "\n";
    print 'task status: ' . $task->Status . "\n";

    exit;
}

// The QuickGetStr method returns a string.  Therefore, after the task is finished,
// we can get the string result by calling GetResultString.  This is the return value had
// we called QuickGetStr synchronously.
$html = $task->getResultString();

print $html . "\n";


?>