PHP textbox loading in text

Hey
quick question ( i hope… )
i have a small database with a few entries, and a button to edit the entries…
once this button is pressed i want a text field to come up with the entries text in it ready to be edited and resubmitted, what im wondering is… how do i get the text i loaded in to appear in the text box?
i want this text box to have the text of variable $answer

<textarea name=“answer” cols=“83” rows=“5”></textarea>

and how do i refer to it using $_POST after its been sent
to get the edited data back?

im using php and mysql databases.

Thanks
//VoS