saving html tags and reproducing properly

I am using mysql db and PHP code.

I store value like this in db <u><strike>&开发者_如何学Pythonlt;i><b>Opinion</b></i></strike></u>

that is with some editor. so how do I display it so that, it takes all the tags given to it?

You should always use htmlspecialchars() function when filling form values.
As well as textarea content.
It will preserve all your tags as is.

$text = htmlspecialchars($text);
echo "<textarea>$text</textarea>";