Html / Php form not adding to SQL database

Question

I\'ve been working on this for hours now and including rebuilding my whole code I cannot figure out what is wrong. The HTML form is supposed to populate the patients SQL databas

Answer 1

As answered on your duplicate post (also answering here for completeness), you're checking for a "doa" field in your if statement, which doesn't exist. Your form defines "dob" twice: once for Date of Birth, and once for Date of Admission:

<label for="dob">Date of Birth:</label>
<input type="text" name="dob">

...

<label for="doa">Date of Admission:</label>
<input type="text" name="dob">

Answer 2

I am not completely sure about this being the safest way but instead of using MSQLI PDO why don't you try simple mysqli_query($conn,$sql);