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 could use the same approach, but put the echo between the opening and closing tags, as the textarea doesn't have a 'value' (as such) it has textual content:

<?php echo $_POST['textareaContent']; ?>