What is the potential issue with the code snippet "$reg_seit = date_format(now(), '%d.%M.%Y');" in PHP?

The issue with the code snippet "$reg_seit = date_format(now(), '%d.%M.%Y');" is that the function now() is not a valid PHP function. To fix this issue, you can use the date() function instead of now() to get the current date and time in the desired format.

$reg_seit = date('d.m.Y');