Question

I am using PHP and I am using the S3 API to upload a file, but I wanted to make sure that this exact filename doesn’t already exist in the bucket before upload.

I have found a few examples online that use “file_get_contents” but doesn’t this mean that you would have to download the entire file first? Usually, these files are about 10 mb, so ideally, I wouldn’t really want to do this.

Is there perhaps a way to use “file_get_contents” without downloading the file?

Or better yet, perhaps I could use an API request to see if the filename exists?

It’s not important to me whether or not the content, or filesize, is the same, just the filename.

Answer 1

Gets whether or not the specified Amazon S3 object exists in the specified bucket.

AmazonS3 doesObjectExist

$s3 = new AmazonS3();
$bucket = 'my-bucket' . strtolower($s3->key);

$response = $s3->doesObjectExist($bucket, 'test1.txt');

// Success? (Boolean, not a CFResponse object)
var_dump($response);