enter code$s3Client = new AwsS3S3Client([
        'region'  => {my region name} ,
        'version' => 'latest',
        'credentials' => array(
            'key' => {my key} ,
            'secret'  => {my secret},
        )
    ]);

    $result = $s3Client->putObject([
        'Bucket'     => {my bucket name},
        'Key'        => 'index.html',
        'body' => {file content},
    ]);

[status code] 403 [reason phrase] Forbidden SignatureDoesNotMatch (client): The request signature we calculated does not match the signature you provided. Check your key and signing method.