hidden attribute in input tag from html form

Question

I am trying to get the posted information and display the info using the following code:

PHP code:

        $self = $_SERVER['PHP_SELF'];
        if(isset($_POST['send'])){                
            $words = htmlspecialchars($_POST['board']);
            print "<b>".$words."</b>";
        }

HTML code:

<form action="<?php $self ?>" method=post> <!--$self is the directory of the page itself-->
        <p><i>Comment</i></p>
        <textarea name="board" rows="20" cols="10"></textarea>
        <input name="send" type="hidden" />
        <p><input type='submit' value='send' /></p>
</form>

The code above will work as I intented. However, if I get rid of the input name="send" type="hidden", the user input message will not show up once the send button is clicked. Why would this happen?

you can remove the action="<?php $self?>" since you are directing it on the same page. — Þaw
– Þaw, Commented Jun 27, 2013 at 1:06

Ryan Kempt · Accepted Answer · 2013-06-27 01:02:27Z

4

You need to add name='send' to your submit button, your PHP code is reading the name of the form elements, and you have not specified one for your submit button.

<form action="<?php $self ?>" method=post> <!--$self is the directory of the page itself-->
        <p><i>Comment</i></p>
        <textarea name="board" rows="20" cols="10"></textarea>
        <p><input type='submit' name='send' value='send' /></p>
</form>

Also, a quick note - you can change your form method to GET instead of POST to easily see what form data you're sending in the URL bar.

answered Jun 27, 2013 at 1:02

Ryan Kempt

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Comments

Gohn67 · Accepted Answer · 2013-06-27 01:02:34Z

2

This is because you are checking that the POST variable "send" isset. That is what you named your hidden input.

You should add a name to your submit input. Example:

    <p><input type='submit' name="submit_button" value='send' /></p>

Now in your php, check for the name of your submit button. I used "submit_button" in this example. Here is modified code example:

    $self = $_SERVER['PHP_SELF'];
    if(isset($_POST['submit_button'])){                
        $words = htmlspecialchars($_POST['board']);
        print "<b>".$words."</b>";
    }

answered Jun 27, 2013 at 1:02

Gohn67

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Comments

Kylie · Accepted Answer · 2013-06-27 01:06:18Z

0

Dont have to bother naming your send button or anything, just remove that hidden line...

and change your php to....

 $self = $_SERVER['PHP_SELF'];
    if(isset($_POST)){                
        $words = htmlspecialchars($_POST['board']);
        print "<b>".$words."</b>";
    }

answered Jun 27, 2013 at 1:06

Kylie

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