我如何以Web表单将数据库发送到数据库

Question

<?php
    if(isset($_POST['submit'])) {
       $name = $_POST['name'];
       $keywords = $_POST['keywords'];
       $description = $_POST['description'];
       $user_id = $_GET['user_id'];


?>        

I have a web form that needs to recognize the users id #. I have it set up where $user_id = $_GET['user_id']; I also believe that I have the id retrieval code right. I made sure that the user_id matched my table but I keep getting an error that says that user_id is an unidentified index.

Answer 1

This means that user_id is not being sent in the headers; You are using both GET and POST in that code snippet, you can only send one at a time when doing a HTTP Request unless your form action has query string in it.

I believe what you could be doing is that on the page with your form, you have user_id set in the URL, however when that form is posted, you will loose all the query strings, so you need to do this;

<form action="/post.php?user_id=123" method="POST">

That should hopefully solve your issue.