(PHP ActiveX) (using AWS Signature Version 2) Streaming Download to File

The main purpose of this example is to demonstrate how to use the older Signature Version 2 authentication w/ S3. It uses V2 authentication to download a file.

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.Rest')
$rest = new COM("Chilkat.Rest");

// Connect to the Amazon AWS REST server.
$bTls = 1;
$port = 443;
$bAutoReconnect = 1;
// The file is located in the bucket named "chilkat100", which becomes part of the domain:
$success = $rest->Connect('chilkat100.s3.amazonaws.com',$port,$bTls,$bAutoReconnect);

// Provide AWS credentials for the REST call.
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.AuthAws')
$authAws = new COM("Chilkat.AuthAws");
$authAws->AccessKey = 'AWS_ACCESS_KEY';
$authAws->SecretKey = 'AWS_SECRET_KEY';
$authAws->ServiceName = 's3';

// For AWS Signature Version 2, the following two properties need to be set:
$authAws->SignatureVersion = 2;
// See http://docs.aws.amazon.com/AmazonS3/latest/dev/RESTAuthentication.html#ConstructingTheCanonicalizedResourceElement
$authAws->CanonicalizedResourceV2 = '/chilkat100/starfish.jpg';

$success = $rest->SetAuthAws($authAws);

// Send the request to download the JPG.
$success = $rest->SendReqNoBody('GET','/starfish.jpg');
if ($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 JPG 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/starfish.jpg';

    // 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 JPG file.' . "\n";

}
else {
    $errResponse = $rest->readRespBodyString();
    if ($rest->LastMethodSuccess != 1) {
        print $rest->LastErrorText . "\n";
    }
    else {
        print $errResponse . "\n";
    }

}


?>