Azure 使用 rest API 将 blob 从一个存储帐户复制到同一订阅中的另一个

我想使用 Rest API 和 PHP 将 blob 从一个存储帐户复制到同一订阅中的另一个存储帐户。我可以使用以下代码将 blob 从一个容器复制到同一存储帐户中的另一个容器

<?php    
$date = gmdate('D, d M Y H:i:s \G\M\T');
$account_name = "accname";
$destcontainername = "destcontainer";
$blobname = "blob.png";
$sourcecontainer = "sourcecontainer";    
$account_key = "asdf";

$canonicalizedHeaders = "x-ms-copy-source:https://".$account_name.".blob.core.windows.net/".$sourcecontainer."/".$blobname."\nx-ms-date:$date\nx-ms-version:2015-04-05";
$canonicalizedResource = "/$account_name/$destcontainername/$blobname";

$arraysign = array();
$arraysign[] = 'PUT';                     /*HTTP Verb*/  
$arraysign[] = '';                        /*Content-Encoding*/  
$arraysign[] = '';                        /*Content-Language*/  
$arraysign[] = '';                        /*Content-Length (include value when zero)*/  
$arraysign[] = '';                        /*Content-MD5*/  
$arraysign[] = '';                        /*Content-Type*/  
$arraysign[] = '';                        /*Date*/  
$arraysign[] = '';                        /*If-Modified-Since */  
$arraysign[] = '';                        /*If-Match*/  
$arraysign[] = '';                        /*If-None-Match*/  
$arraysign[] = '';                        /*If-Unmodified-Since*/  
$arraysign[] = '';                        /*Range*/  
$arraysign[] = $canonicalizedHeaders;     /*CanonicalizedHeaders*/
$arraysign[] = $canonicalizedResource;    /*CanonicalizedResource*/

$stringtosign = implode("\n", $arraysign);

$signature = 'SharedKey'.' '.$account_name.':'.base64_encode(hash_hmac('sha256', $stringtosign, base64_decode($account_key), true));

$endpoint = 'https://'.$account_name.'.blob.core.windows.net';
$url = $endpoint.'/'.$destcontainername.'/'.$blobname;

$headers = [
    'x-ms-copy-source:https://'.$account_name.'.blob.core.windows.net/'.$sourcecontainer.'/'.$blobname,
    "x-ms-date:{$date}",
    'x-ms-version:2015-04-05',
    'Accept:application/json;odata=nometadata',
    'Accept-Charset:UTF-8',
    'Content-Length:0',
    "Authorization:{$signature}"
];

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'PUT');
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); 
$response  = curl_exec($ch);
echo curl_error($ch);
curl_close($ch);        

echo '<pre>';print_r($response);

我想知道是否必须使用相同的副本 blob rest API 来完成它。如果是，那么$canonicalizedHeadersand$canonicalizedResource和 resquest rest API将是什么。我可以使用下面的 powershell 命令将 blob 从一个存储帐户复制到另一个

Start-AzureStorageBlobCopy -DestContainer $destinationContainerName -DestContext $destinationContext -SrcBlob $vhdName -Context $sourceContext -SrcContainer $sourceSAContainerName