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(PHP ActiveX) Streaming Download Large File to the Local FilesystemDownloads a large file in a streaming fashion to the local filesystem.
<?php // Azure File Service Example: Downloads a large file to the local filesystem using a Chilkat stream. // See: https://docs.microsoft.com/en-us/rest/api/storageservices/get-file // 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.Rest') $rest = new COM("Chilkat.Rest"); // Connect to the Azure Storage Blob Service $bTls = 1; $port = 443; $bAutoReconnect = 1; // In this example, the storage account name is "chilkat". $success = $rest->Connect('chilkat.file.core.windows.net',$port,$bTls,$bAutoReconnect); if ($success != 1) { print $rest->LastErrorText . "\n"; exit; } // Provide Azure Cloud credentials for the REST calls. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.AuthAzureStorage') $azAuth = new COM("Chilkat.AuthAzureStorage"); $azAuth->AccessKey = 'AZURE_ACCESS_KEY'; // The account name used here should match the 1st part of the domain passed in the call to Connect (above). $azAuth->Account = 'chilkat'; $azAuth->Scheme = 'SharedKey'; $azAuth->Service = 'File'; // This causes the "x-ms-version: 2021-08-06" header to be automatically added. $azAuth->XMsVersion = '2021-08-06'; $success = $rest->SetAuthAzureStorage($azAuth); // Note: The application does not need to explicitly set the following // headers: x-ms-date, Authorization. These headers // are automatically set by Chilkat. // When streaming a download to the local filesystem or directed elsewhere, // the complete HTTP GET operation must be broken into parts. // For example, an HTTP GET consists of sending the request, followed by reading the response header, // and then finally the response body. We'll want to read the response header, and then based // on the information received (such as success or failure), either read the response body // as an error message, or as the file data. // Send the HTTP GET request to download the file. // The share is named "pip". $success = $rest->SendReqNoBody('GET','/pip/somethingBig.zip'); if ($success != 1) { print $rest->LastErrorText . "\n"; exit; } // Read the response header. $responseStatusCode = $rest->ReadResponseHeader(); if ($responseStatusCode < 0) { print $rest->LastErrorText . "\n"; exit; } print 'Response status code = ' . $responseStatusCode . "\n"; // We expect a 200 response status if the file data is coming. // Otherwise, we'll get a string response body with an error message(or no response body). if ($responseStatusCode == 200) { // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Stream') $bodyStream = new COM("Chilkat.Stream"); // The stream's sink will be a file. $bodyStream->SinkFile = 'qa_output/somethingBig.zip'; // Read the response body to the stream. Given that we've // set the stream's sink to a file, it will stream directly // to the file. $success = $rest->ReadRespBodyStream($bodyStream,1); if ($success != 1) { print $rest->LastErrorText . "\n"; exit; } print 'Successfully received the large file.' . "\n"; } else { $errResponse = $rest->readRespBodyString(); if ($rest->LastMethodSuccess != 1) { print $rest->LastErrorText . "\n"; } else { print $errResponse . "\n"; } } ?> |
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