Question

I want to get a variable from a conditional if of form assigned to take the value of a textbox:

<form action="" method="POST">
    <input type="text" name="name">
    <input type="submit" value="Click Here!" name="submit">
    <?php
        if (isset($_POST['submit'])) {
            $name = $_POST['name'];
            echo "<br /><input type=\"submit\" value=\"Show it!\" name=\"show\">";
        }

        if (isset($_POST['show'])) {
            echo $name; //i got "Notice: Undefined variable: name" here
        }
    ?>
</form>

I want show value of $name after input:name pressed.

Answer 1

Hello and welcome to stackoverflow,

If you want to make your form in 2 steps, you need to store the “name” value in the intermediate form.

<form action="" method="POST">                                                                                             
    <input type="text" name="name">                                                                                        
    <input type="submit" value="Click Here!" name="submit">                                                                
    <?php
    if (isset($_POST['submit']))
    {
        $name = htmlentities($_POST['name']);
        echo "<input type=\"hidden\" value=\"{$name}\" name=\"name\">";
        echo "<br /><input type=\"submit\" value=\"Show it!\" name=\"show\">";
    }

    if (isset($_POST['show']))
    {
        $name = htmlentities($_POST['name']);
        echo $name;
    }
    ?>                                                                                                                     
</form>  

Several things to point out :

• in a field of type “hidden” you store your $name
• in such a way you can recover it in the second step
• you should also have a look to the htmlentities() function

Hope this helps!

Try it here