How to protect HTML form from blank submission

Question

Basically I\'m using this tutorial: HTML FORM

Everything is working as it should but one flow I\'ve found is that everyone can see the URL for your

Answer 1

Say you have the following form;

In this, instead of a submit type input, I have used a button. This means, something needs to happen before the page will submit, so, for example;

The JavaScript function here will only call the submit on the form when the inputs are not empty

In terms of stopping someone from accessing this without permission;

Using die in this, will terminate execution of the script any further, you can also use exit and both allow you have have a "termination message" attached to them as part of the stoppage process

$_REQUEST isn't the safest of options, but it permits you to use GET or POST methods from forms to be able to retrieve and use data