Hi, Today i am gonna talk about how to use SDK provided by aws (PHP).
For aws SDK, they support few kind of languages such as Php, Android, IOS , Java, Python. For all the available language for sdk , Click Here

You will have to import aws sdk files there are three kind of method based on this link
P/S :- Php including method only

And Here are some codes to show how to use the sdk.

require "AWS/aws-autoloader.php";

$s3 = new Aws\S3\S3Client([
    'version' => 'latest',
    'region'  => 'ap-southeast-2'
]);

$result = $s3->listBuckets();
print_r($result);

You’ll be wondering Why i do not have to pass the access and secret key into the functions, that is because in my case, i am using the access key and secret key as an enviroment variable. This is the best and most secure of handling credentials. AWS SDK will find enviroment variables (AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY ).

On the other hand you can also do this:

require "AWS/aws-autoloader.php";

$s3 = new Aws\S3\S3Client([
    'version'     => 'latest',
    'region'      => 'ap-southeast-2',
    'credentials' => array(
                     'key'=>'YOUR_AWS_ACCESS_KEY_ID',
                     'secret'=>'YOUR_SECRET_ACCESS_KEY'
                      )
]);

$result = $s3->listBuckets();
print_r($result);