John Davidson

Message:

I'm building a simple message sending service with HTML, PHP, and MySQL.

guestbook       --- directory

 ㄴ addMessage.php

 ㄴ guestbook.php

...

index.php

at index.php, I included guestbook.php to use functionality in that file.

    <?php include("./guestbook/guestbook.php") ?>

at guestbook.php, I made a simple form to allow writing messages for only logged user, and the data will be send to addMessage.php as I wrote in the code.

<div style="position:absolute; top: 15%; left:25%; width:50%;">



    <form action="addMessage.php" method="post">



        <div class="form-group">

            <label for="exampleFormControlTextarea1">Write some message!</label>

            <?php

            if (isset($_SESSION['id'])) {



                echo '<textarea class="form-control" name="message" id="exampleFormControlTextarea1" rows="3" placeholder="~~~~"></textarea>';

                echo '<button type="submit" class="btn btn-primary">write message</button>';



            } else {



                echo '<textarea class="form-control" id="exampleFormControlTextarea1" rows="3" placeholder="You should login first" readonly></textarea>';

                echo '<button type="submit" class="btn btn-primary" disabled>write message</button>';



            }

            

        ?>

        </div>



    </form>



</div>

and addMessage.php, I put only one line of code to check whether it works.

<?php



    // $conn = mysqli_connect("localhost", "alphatrox", "alphatrox", "cryptogame");



    // for test

    echo $_POST["message"];



?>

But when I send a message, I meet the error message that the addMessage.php(the URL was http://localhost/addMessage.php.) does not exist even I created it in the same directory.

Not Found

The requested URL was not found on this server.



Apache/2.4.52 (Win64) OpenSSL/1.1.1m PHP/8.1.2 Server at localhost Port 80

Can you tell me what I'm doing wrong?
I'm facing trouble...

thank you.

---

My Answer:
The `action` attribute in an HTML form specifies the URL where the form data should be submitted when the form is submitted. This URL can be a relative or absolute URL.

For example:
html

In this example, when the form is submitted, the data will be sent to the `submit-form.php` file on the server.