PHP: mysql return value "escapes" textarea

Question

If the return value of a mysql query contains "" and / the content is displayed outside the textarea

content = <a href="url">link</a>

echo() is used inside the textarea

<textarea><?php echo $row['value']; ?></textarea>

the textarea displays <a href= and what follows it is displayed outside the textarea

How do I contain all html inside the textarea?

Answer 1

htmlspecialchars($row['value'])