Get value from textbox

Question

I want to get the value of a textbox in PHP, and when I try this:

<form method=post action="update.php">
<input type="text" name="Hex" />
<input type="submit" value="OK" />  
</form>

<?php
$test = $_POST['Hex'];
echo $test;
?>      

I just get the error:

Undefined index: Hex

I've Googled to no avail; so please someone, help me!

Answer 1

i think the issue is with the quotation marks, @GuiceU you forgot to add the quotes to post.

Just replace your method = post with method="post"

HTML code:

<form method="post" action="update.php">
<input type="text" name="Hex" />
<input type="submit" value="OK" />  
</form>

php code:

<?php
               $test = $_POST['Hex'];
               echo $test;
?>  

Answer 2

I hope this help you:

    <?php
if (isset($_POST['submit'])) {
$test = $_POST['Hex'];
echo $test;
} else { ?>
<form method="post" action="">
<input type="text" name="Hex" />
<input type="submit" value="OK" name="submit" />  
</form>
<?php } ?>