Php sessions and form action

Question

I am trying to get data from a form and send it to another page using sessions only. Without using post

I have read this but if i put the page name in the action atribute, the script is not executed, and the action is always performed first when the button is pushed.

Here is my solution

<html>
<body>
   <h3>a) Inserir uma nova pagina: </h3>
        <form action="" method="post">
            <p>userid: <input type="text" name="input_userid"/></p>                
            <p>Nome de Nova Pagina <input type="text" name="input_nova_pagina"/></p>
            <p><input type="submit" name="Submit" value="Adicionar nova pagina!"/></p>

            <?php
            session_start();
            if (isset($_POST['Submit'])) { 
                 $_SESSION['userid'] = $_POST['input_userid'];
                 $_SESSION['nova_pagina'] = $_POST['input_nova_pagina'];
                 header('Location: /xampp/Aptana/BDproj2/addp.php');
             } 
            ?>
        </form>
</body>

The Second page is:

<?php
  session_start();
 ?>

and this

<html>
<body>
<?php
    echo "Favorite color is " . $_SESSION["userid"] . ".<br>";
    echo " nome da pag : " . $_SESSION["nova_pagina"];
    //$userid = $_REQUEST['input_userid'];
    //$nova_pagina = $_REQUEST['input_nova_pagina'];

?>
</body>

Is there a better way to do what i want? i hope i was clear.

possible duplicate of stackoverflow.com/questions/8028957/… — Funk Forty Niner
– Funk Forty Niner, Commented Feb 1, 2016 at 22:19
Before i had the session_start right at the begining but it didn't make it work either. I don't have any error with the code i showed. i think that0s what you ment? — Ibil
– Ibil, Commented Feb 1, 2016 at 22:42
Add error reporting to the top of your file(s) right after your opening PHP tag for example <?php error_reporting(E_ALL); ini_set('display_errors', 1); then the rest of your code, to see if it yields anything. If you see headers sent, you'll know what to go after. — Funk Forty Niner
– Funk Forty Niner, Commented Feb 1, 2016 at 22:51
Tried that with the original version without the header instructions, with the php session at the top and with the action="addp.php" but it said the same error when jumping to the second page trough the action: Undefined variable: _SESSION — Ibil
– Ibil, Commented Feb 1, 2016 at 23:12

Bogdan Haidu · Accepted Answer · 2016-02-01 23:47:45Z

3

I hope I got it this time :). I've deleted the previous answer. It's just a matter of having action = "current_page.php". Mine was php_sessions.php. If this isn't what you are looking for then you should try jquery or ajax....

FIRST PAGE (named php_sessions.php):

 <?php
        ini_set('display_errors', 1);
        error_reporting(E_ALL); 
        session_start();

         if (isset($_POST['Submit'])) { 
             $_SESSION['userid'] = $_POST['input_userid'];
             $_SESSION['nova_pagina'] = $_POST['input_nova_pagina'];
             header('Location: xampp/Aptana/BDproj2/addp.php');
         } 

    ?>    
    <html>
        <body>
           <h3>a) Inserir uma nova pagina: </h3>
                <form action="php_sessions.php" method="post">
                    <p>userid: <input type="text" name="input_userid"/></p>                
                    <p>Nome de Nova Pagina <input type="text" name="input_nova_pagina"/></p>
                    <p><input type="submit" name="Submit" value="Adicionar nova pagina!"/></p>
                </form>

        </body>
    </html>

SECOND PAGE xampp/Aptana/BDproj2/addp.php:

<?php
    ini_set('display_errors', 1);
    error_reporting(E_ALL); 
    session_start();

?>

    <html>
        <body>
            <?php
                echo "Favorite color is " . $_SESSION["userid"] . ".<br>";
                echo " nome da pag : " . $_SESSION["nova_pagina"];
                //$userid = $_REQUEST['input_userid'];
                //$nova_pagina = $_REQUEST['input_nova_pagina'];

            ?>
        </body>
    </html>

edited Feb 1, 2016 at 23:47

answered Feb 1, 2016 at 22:39

Bogdan Haidu

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12 Comments

Funk Forty Niner Over a year ago

your second page: will fail. Their error is obvious.

Bogdan Haidu Over a year ago

have you tested it? :) this works for me as long as the second page is "addp.php" and it's relative path is "xampp/Aptana/BDproj2/". I tried to keep the original data.

Funk Forty Niner Over a year ago

you mean to tell me that your second page works without session_start();? I find that rather hard to believe.

Bogdan Haidu Over a year ago

Yes, I presume that when I started the session in the first page a cookie file has been created, so the second page will have a session saved and there won't be any errors. I hope it's not because I've tested this in cloud9.

Funk Forty Niner Over a year ago

OP is outputting before header. That's why their code isn't working.

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