Unable to upload multiple images in form

[mushahid-vizteck]

I have three input fields in form to upload images on S3 but the it is uploading only last image.

I have tried to create three different objects but still not uploading three images.
Here is the code:

$s3 = new S3(awsAccessKey, awsSecretKey);
if ($s3->putObjectFile($imagePath, $bucketName, baseName($imageName), S3::ACL_PUBLIC_READ)) {
}