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So I am working on a project and have managed to fix all my initial problems but when I try and submit it fails so there must be something wrong with my code to submit the info to the database. The relevant files are on my github here:
The file that is supposed to submit is confirm.php
I don't have a ton of experience with php or mysqli so I would really appreciate any and all help.
(note: I do not have nearly enough time to rewrite all my code in PDO, although I wouldn't mind hearing why one should use PDO over mysqli, or not, for future references)