This shortcode is created for getting data from any post meta field by its meta key created by in-built meta data constructor.
Example: [mdf_value post_id=5 key='medafi_price' reflection=1]
Attributes:
- post_id - post ID from which you want to get data
- key - meta key, the same as in the meta data constructor
- reflection - if meta key here is reflected in meta data constructor by another meta_key of the site - set 1, another way 0.
Read also: https://wp-filter.com/howto/print-front-end-meta-fields-created/