Download files from AWS S3 to client system - php

Question

I am trying to provide download file option to my users. I am working on AWS EC2 with AWS PHP SDK V2.8. I am able to display images on my website. I try according to question force-download-with-php-on-amazon-s3 but no success. Most of the answer of this question are pretty old. I am using below code for uploading
try {
$result = $s3->putObject(array(
'Bucket' => $bucketName,
'ACL' => 'authenticated-read',
'Key' => "s3112.png",
'ServerSideEncryption' => 'AES256',
'SourceFile' => $filepath,
'ContentType' => mime_content_type($filepath),
'debug' => [
'logfn' => function ($msg) {
echo $msg . "\n";
},
'stream_size' => 0,
'scrub_auth' => true,
'http' => true,
],
));
} catch (S3Exception $e) {
echo $e->getMessage() . "\n";
}
Here is what is tried.
header('Content-disposition: attachment; filename=s3112.png');
header('Content-type: image/png');
readfile("https://s3-ap-southeast-1.amazonaws.com/mytest.sample/s3112.png");
//header("Location: https://s3-ap-southeast-1.amazonaws.com/mytest.sample/s3112.png");
//// Location redirection to a MP3 that lets the browser decide what to do.
//header("Location: https://s3-ap-southeast-1.amazonaws.com/mytest.sample/s3112.png");
I tried with
<a href="https://s3-ap-southeast-1.amazonaws.com/mytest.sample/s3112.png" download>
but no success. Any help appreciate.

Answer 1

If the object has public-read access, you should just be able to link to it.
You can also set read access to all objects in a bucket using a bucket policy.
You could also redirect to an S3 presigned URL of the object:
$cmd = $s3Client->getCommand('GetObject', [
'Bucket' => 'my-bucket',
'Key' => 'testKey'
]);
$request = $s3Client->createPresignedRequest($cmd, '+20 minutes');
// Get the actual presigned-url
$presignedUrl = (string) $request->getUri();
header('Location: ' . $presignedUrl);