How can I set the value of a textbox through PHP?

Question

So I have this empty textboxes in a registrationg page. The user enters some data, hits continue and then there\'s a confirmation page. If the data is incorrect, the user hi

Answer 1

To set the value, you can just echo out the content inside the value attribute:

<input type="text" name="firstname" value="<?php echo htmlentities($firstName); ?>" />
<input type="text" name="lastname" value="<?php echo htmlentities($lastName); ?>" />

Answer 2

Of course you will want to escape it but...

<input type="text" value="<?php echo $firstName ?>" />

or if the form is posted, it would be easier to do:

<input type="text" name="firstName" value="<?php echo $_POST['firstName'] ?>" />

fine... even though it was out of the scope of the question here is the escaped version:

<input type="text" name="firstName" value="<?php echo htmlentities($_POST['firstName']) ?>" />

Answer 3

smth like

<input type="text" value="<?php echo $first_name;?>">

Don't forget to escape with htmlentities() or smth similar. If you don't know why - google XSS.