嗯，写作echo ninja_forms_field_submission_left_display( $field_id, $data ); 如果$field_id 和$data 是正确的。

创建短代码应该同样简单：

function field_sc_wpse_145003($atts,$content) {
  if (!isset($atts[\'field_id\'])) return;
  return ninja_forms_field_submission_left_display( $atts[\'field_id\'], $atts );
}
add_shortcode(\'fieldfc\',\'field_sc_wpse_145003\');

echo do_shortcode(\'[fieldfc field_id="abc" default_content="def"]\');