mbk24

function list_s3_bucket_contents() {

    require __DIR__ . '/../../../vendor/autoload.php';

    $s3 = new Aws\S3\S3Client([

        'version' => 'latest',

        'region'  => 'your-region',

        'credentials' => [

            'key'    => 'Your Key here',

            'secret' => 'Your secret key here',

        ],

    ]);

    // Output for both buckets

    $output = '<select name="s3-buckets">';

    // List buckets you want to display

    $buckets = ['Bucket1', 'Bucket2'];

    foreach ($buckets as $bucket) {

        $output .= "<optgroup label='{$bucket}'>";

        try {

            $results = $s3->listObjects(['Bucket' => $bucket]);

            foreach ($results['Contents'] as $item) {

                $output .= "<option value='{$item['Key']}'>{$item['Key']}</option>";

            }

        } catch (Aws\Exception\AwsException $e) {

            // Output the error message if something goes wrong.

            $output .= "<option>Error retrieving from {$bucket}</option>";

        }

        $output .= '</optgroup>';

    }

    $output .= '</select>';

    return $output;

}

add_shortcode('s3_content_dropdown', 'list_s3_bucket_contents');