Change date format

Well, you could benefit from built-in Time class in CI4 internalization library rather then invent the week and bring in yet another custom converter:

PHP Code:

use CodeIgniter\I18n\Time;

//read $datetime from DB and convert it to human-readable format
$myTime = Time::createFromFormat('Y-m-d H:i:s', $datetime)->toLocalizedString('dd.MM.YYYY HH:mm'); 


Now you can adjust input format in creareFromFormat() first parameter to match your source, and adjust output format in toLocalizedString() parameter to receive desired format with respect to localization settings of your application or even your current user.