Front-end HTML and PHP+MySQL connection

Question

I make a login and registration function. (Registration function) I use

<script type="text/javascript" src="reg.php?id" in the HTML file (reg.html) =reg"></script>

<script type="text/javascript" src="reg.php"></script> (tried both)

Connect to the PHP file (reg.php), and then there is no interaction between the front and back ends during the test. When there are no code errors in the HTML file and PHP file, what is the problem? According to my own ideas, is it right? There is no trigger button written in the HTML file to trigger the code in the PHP file (meaning to get a button, click it and trigger the PHP file code effect), and is it possible that the above connection is wrong

Answer 1

<script src=""></script> This tag is used to introduce js files. The front-end and back-end data interaction can be done by writing js methods, or directly submitting the form

Answer 2

PHP does not need to be referenced like js.

Answer 3

Have you submitted the form? submit

Answer 4

Why use javascript to quote

Answer 5

I compared the codes of teachers