Seeing if object exists in S3 using PHP

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); 

Answer 2

try to use code below:

$s3 = new S3();  $info = $s3->getObjectInfo($bucket, $filename); if ($info) {     echo 'File exists'; } else {     echo 'File does not exists'; } 

download the S3 SDK from amazon for php. There is a class called S3; create an object of S3. The object will allow to call the getObjectInfo() method. Pass your S3 bucket name and the file name (often the file name is referred as key). The getObjectInfo() method will return some information if the file exists, otherwise the method will return FALSE.