Microsoft graph api ms graph php sdk消息对象无法检查是否存在附件

我正在从Outlook帐户检索邮件。我正试图从这些邮件中获取内联文件和附件

$graph = new Graph();
$graph->setAccessToken($this->getAccessToken());

$messageQueryParams = array (
    "\$select" => "subject,receivedDateTime,from,sentDateTime,body,toRecipients,sender,uniqueBody,ccRecipients,bccRecipients,attachments",
    "\$orderby" => "receivedDateTime DESC",
    "\$top" => "200" 
);

$url = '/me/mailfolders/' . $folder . '/messages/delta';
$url_combiner = '?';

$getMessagesUrl = $url . $url_combiner . http_build_query($messageQueryParams);
$response = $graph->createRequest('GET', $getMessagesUrl)->execute();

$messages = $response->getResponseAsObject( \Microsoft\Graph\Model\Message::class );

foreach($messages as $msg) {
     echo $msg->getHasAttachments();
}

此代码为$msg->getHasAttachments（）返回“null”；我希望它能返回一个正确或错误的答案

我从这个文件夹下载的邮件既有内联附件也有邮件附件，所以我正在寻找解决这两个问题的方法

---

（非常感谢指向MS Graph PHP SDK文档中特定点的响应。）

在您的情况下，这是预期的行为

getHasAttachments（）

方法返回

null

，因为

hasAttachments

未包含在

$select

查询选项中，因此不会从服务器请求它。需要明确包括，例如：

$messageQueryParams = array (
    "\$select" => "hasAttachments,...",
    //another params are omitted for clarity
);

然后，邮件是否包含附件可以这样确定：

foreach($messages as $msg) {
    if($msg->getHasAttachments() == true){
        //...
}

$messageQueryParams = array (
     "\$expand" => "attachments",
    //another params are omitted for clarity
); 

 foreach($messages as $msg) {
    foreach($msg->getAttachments() as $attachment) {
        //...
    }
 }

所提供的示例还有一个问题，要检索

邮件。附件
引用属性（或关系属性），需要通过
$expand
查询字符串参数指定它，而不是
$select
（请参阅以获取更多详细信息），如下所示：

foreach($messages as $msg) {
    if($msg->getHasAttachments() == true){
        //...
}

$messageQueryParams = array (
     "\$expand" => "attachments",
    //another params are omitted for clarity
); 

 foreach($messages as $msg) {
    foreach($msg->getAttachments() as $attachment) {
        //...
    }
 }

然后可以像这样迭代attachments集合：

foreach($messages as $msg) {
    if($msg->getHasAttachments() == true){
        //...
}

$messageQueryParams = array (
     "\$expand" => "attachments",
    //another params are omitted for clarity
); 

 foreach($messages as $msg) {
    foreach($msg->getAttachments() as $attachment) {
        //...
    }
 }