How to use in PHP code

You can use this ingester in PHP code like this:

$itemData['o:media'][] = [
    // The ingester name is "s3-" followed by the name of the source configured earlier.
    'o:ingester' => 's3-my-s3-source',
    'ingest_filename' => 'path/to/file.png',
    'original_file_action' => 'keep', // or 'delete'
];
$api->create('items', $itemData);