Add more fields on media attachments uploaded in the dashboard

Question

Is it possible to extend, or add more field when using WordPress browser uploader ?

var_dump($_POST) return 3 field, I wish to add more :

array (size=3)
  'action' => string 'upload-attachment' (length=17)
  'name' => string 'file.jpg' (length=8)
  '_wpnonce' => string 'abcde12345' (length=10)

Answer 1

Looks like, you can add additional values using plupload_default_params filter hook.

Example usage

add_filter( 'plupload_default_params', function( $params ) : array {
    $params['some'] = 'some'; 
    return $params;
});