How to keep text inserted in a html <textarea> after a wrong submission?

Question

Suppose I have a form like this:

    Section1: 

    Sec         


        

Answer 1

You would put it inside the </code> element like so:</p> <pre><code><textarea name="post_text" cols="100" rows="20"><?php echo $_POST['post_text']; ?>

However, calling the $_POST element directly is not best practice. You should rather do something like this:

<?php echo $var = isset($_POST['post_text']) ? $_POST['post_text'] : ''; ?>

This stops an E_NOTICE error from being reported upon the first page-load.