Topic: get_post() vs check_value()
The function get_post($name, $dflt='') is defined in includes/ui/ui_controls.inc.
The function check_value($name) is defined in includes/ui/ui_input.inc.
In the former, a default non zero / non one value / null can be set whereas, in the latter the default value is hardcoded as 0 or 1.
In the former, isset() is used for blank check whilst in the latter an empty() check is used.
Each one uses themselves recursively for arrays.
Hence in FA, are these two equivalent across PHP versions: