PHP Extension
Outlook --Download Attachments for a Specific Message

Demonstrates how to download the attachments for a particular email message.
Note: This example requires Chilkat v9.5.0.67 or greater.
Chilkat PHP Extension Downloads

PHP Extension
<?php

include("chilkat.php");

$success = false;

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

$http = new CkHttp();

// Use your previously obtained access token here:
// See the following examples for getting an access token:
//    Get Microsoft Graph OAuth2 Access Token (Azure AD v2.0 Endpoint).
//    Get Microsoft Graph OAuth2 Access Token (Azure AD Endpoint).
//    Refresh Access Token (Azure AD v2.0 Endpoint).
//    Refresh Access Token (Azure AD Endpoint).

$http->put_AuthToken('MICROSOFT_GRAPH_ACCESS_TOKEN');

$sbResponse = new CkStringBuilder();

// Sends:  GET /users/{user_id | userPrincipalName}/messages/{message_id}/attachments
// Note: It is also possible to use the literal string "me" for the current logged-on user.
// For example: GET /me/messages/{message_id}/attachments

$http->ClearUrlVars();
$http->SetUrlVar('userPrincipalName','chilkatsoft@outlook.com');

// Assume we already have a message ID from previously listing the messages in a folder
$messageId = 'AAMkADYzZWE3YmZmLWU0YzgtNGNkZC04MGE1LWFiYTFlNTRlY2QwYQBGAAAAAAAu7cUXL5YOTrdsUIw7-v8FBwBUcG0qWqkmQYqWLHQataQxAACnwqJUAABUcG0qWqkmQYqWLHQataQxAACnwrnOAAA=';
$http->SetUrlVar('message_id',$messageId);

// Send the request to download the attachments.
$success = $http->QuickGetSb('https://graph.microsoft.com/v1.0/users/{$userPrincipalName}/messages/{$message_id}/attachments',$sbResponse);
if (($success != true) and ($http->get_LastStatus() == 0)) {
    print $http->lastErrorText() . "\n";
    exit;
}

// The attachment data is contained within the JSON response.
$json = new CkJsonObject();
$json->LoadSb($sbResponse);
$json->put_EmitCompact(false);

print 'Status code = ' . $http->get_LastStatus() . "\n";
if ($http->get_LastStatus() != 200) {
    print $json->emit() . "\n";
    print 'Failed.' . "\n";
}

// This is a sample JSON response.  The code for parsing and extracting/saving the attachments
// is shown below.

// 	{
// 	  "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('chilkatsoft%40outlook.com')/messages('AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAADn68XtMop0TpsYJGpfKXY9AAAAwSju2wAAAA%3D%3D')/attachments",
// 	  "value": [
// 	    {
// 	      "@odata.type": "#microsoft.graph.fileAttachment",
// 	      "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAADn68XtMop0TpsYJGpfKXY9AAAAwSju2wAAAAESABAAft6wtbaSJU6sgQLi98DI0Q==",
// 	      "lastModifiedDateTime": "2017-05-10T00:30:51Z",
// 	      "name": "fishing.pdf",
// 	      "contentType": "application/pdf",
// 	      "size": 295680,
// 	      "isInline": false,
// 	      "contentId": "F861B218BE380F44B16933097FDDACFC@namprd20.prod.outlook.com",
// 	      "contentLocation": null,
// 	      "contentBytes": "JVBERi0xLjMKJcfsj6 ... yZWYKMjk0MzY5CiUlRU9GCg=="
// 	    },
// 	    {
// 	      "@odata.type": "#microsoft.graph.fileAttachment",
// 	      "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAADn68XtMop0TpsYJGpfKXY9AAAAwSju2wAAAAESABAAXS7qXQ-iRUCYXnhJpN8Ihg==",
// 	      "lastModifiedDateTime": "2017-05-10T00:30:51Z",
// 	      "name": "testCert.cer",
// 	      "contentType": "application/octet-stream",
// 	      "size": 1674,
// 	      "isInline": false,
// 	      "contentId": "5E51FA33EF0F8941ACC8260395CB1A33@namprd20.prod.outlook.com",
// 	      "contentLocation": null,
// 	      "contentBytes": "MIIFRjCCBC6gAwIBA ... 7pt3C5w=="
// 	    }
// 	  ]
// 	}

$sbSavePath = new CkStringBuilder();
$attachData = new CkBinData();
$lastMod = new CkDateTime();
$fac = new CkFileAccess();

$i = 0;
$numMessages = $json->SizeOfArray('value');
while ($i < $numMessages) {
    $json->put_I($i);

    print 'name: ' . $json->stringOf('value[i].name') . "\n";
    print 'contentType: ' . $json->stringOf('value[i].contentType') . "\n";
    $sizeInBytes = $json->IntOf('value[i].size');
    print 'size: ' . $sizeInBytes . "\n";

    // Extract the data and save to a file.
    $sbSavePath->SetString('qa_output/');
    $sbSavePath->Append($json->stringOf('value[i].name'));

    $attachData->Clear();
    $attachData->AppendEncoded($json->stringOf('value[i].contentBytes'),'base64');
    $attachData->WriteFile($sbSavePath->getAsString());

    // Get the last-modified date/time and set the output file's last-mod date/time..
    $lastMod->SetFromTimestamp($json->stringOf('value[i].lastModifiedDateTime'));
    $fac->SetLastModified($sbSavePath->getAsString(),$lastMod);

    print '----' . "\n";

    $i = $i + 1;
}

// The output of the above loop is:
// 
// 	name: fishing.pdf
// 	contentType: application/pdf
// 	size: 295680
// 	----
// 	name: testCert.cer
// 	contentType: application/octet-stream
// 	size: 1674
// 	----
// 

?>