[merk]

Yes, that is correct. You can just add another element to the array just by referencing it.

Your method will work, perfectly, i might add. However, it requires you modify a major function every time you upgrade.

With the method i wrote above, its less taxing, imo, to add a single allowance to the adminfunctions_template.php file, as it isnt necessary to re-add after an upgrade until you modify the postbit template again.

It is a shame that you need to add a function to the allow list, because there just wasnt enough allowed functions to work with to compare the strings. The $post['birthday'] field is MM-DD-YYYY (01-10-1980) of birth, whereas birthdaytoday is MM-DD-YYYY (01-10-2004), so you have to chop the end off. (You could reduce birthdaytoday to not have the year, but the compare still would be false without substr).