Server-side Validation
Currently, only client-side validation is performed. That's a bad thing
Edit: It appears that there is indeed server-side validation, but it's not correct. E.g. in qbeleg/belegformular/index.php
the submitted values are checked with is_null()
. However, the variables of an empty field would contain an empty string and not null
. Suggestion: Add additional check with empty()
.