(Dec 16, 2018 11:24 AM)That Guy with Spiders Wrote:  

PHP Code


<?php
if(isset($_POST['submit']))
$username = $_POST['username'];
$password = $_POST['password'];
        echo $username . " " . $password;
    ?>

Pprobably something stupid. This is the second time doing this section as I got this error with a third variable '$id' much later down the line. I tried to fix it and I messed everything up lol. I never got these errors here first time around. I thought I would ask you guys rather than making the same mistake I did last time. That looks fine to me and the HTML attributes are named as such.

(Dec 16, 2018 11:39 AM)Abruptum Wrote:  you should do it like this :

PHP Code


<?php
if(isset($_POST['submit']) && !empty($_POST['username']) && !empty($_POST['password'])){
    $username = $_POST['username'];
    $password = $_POST['password'];
    echo $username . " " . $password;
}
?>

it means that the post variable is not set, so you need to check it before using it.

(Dec 16, 2018 11:55 AM)Nachfolger Wrote:  Well yes, that's a proper way to validate it, but it still doesn't solve OP's problem.

OP, you need to check the HTML, not PHP. Make sure you have the "name=" attributes set inside your form on the username and password input boxes. If you're making a login system, tutorial or not, before you can even comprehend basic errors like this, you're setting yourself up for failure.

(Dec 16, 2018 11:55 AM)That Guy with Spiders Wrote:  When I click the button, the errors go. I kind of see what's happening here. The variables are only being set when I click the button. I guessed I needed to write them outside of the if, but that just threw more errors lol.

(Dec 16, 2018 11:57 AM)Nachfolger Wrote:  Oh, your PHP is on the same page as the form? Yes, you're trying to access them before they were even sent. You should still take heed to the advice in the latter portion of my previous post.

(Dec 16, 2018 01:08 PM)That Guy with Spiders Wrote:  I have checked it all over an made sure the names were there. This is something I checked:

PHP Code


<?php 
<body>
   <div class="container">
       
       <div class="col-sm-6">
          <form action="login.php" method="post">
            <div class="form-group">
              <label for="username">Username</label>
               <input type="text" name="username" class="form-control">
               </div>
                
                 <div class="form-group">
                 <label for="password">Password</label>
               <input type="password" name ="password" class="form-control">
               </div>
                
                <input class ="btn btn-primary" type="Submit" name="submit" value="Submit"
          </form>         
       </div>       
   </div>    
</body> 


(Dec 16, 2018 01:26 PM)Abruptum Wrote:  There is no problem with your html code, you just request for post variables at the page call where are no such data. So you must check for existing of them before using them .
Like Nachfolger allready mentioned don't do a login system if you have no clue how to do it, stick to the basics and do none security related stuff in the first base.

(Dec 16, 2018 01:28 PM)That Guy with Spiders Wrote:  I am on a course that has me doing this. It's simply a demonstration of communicating with a database.

(Dec 16, 2018 04:51 PM)gigajew Wrote:  Don't know if I'm late but your code in the op basically translates to

Code

if(isset($_POST['submit'])) {
$username = $_POST['username'];
}
$password = $_POST['password'];
echo $username . " " . $password;

So it makes perfect sense that username is not defined