$content = ereg_replace("\n", "<br>\n", $content);
If you do this before running your INSERT TO and inserting into the database, i hope you're not making some type of content management script where the info gets put back into a textarea and the site owner can modify it. If so, if you input
this is
what this
looks like
in the textarea, when they go to edit it, they'll see
this is<br>
what this<br>
looks like<br>
if you're not, then this method works great. If you are, I suggest inputting like normal, then when you're going to print the information to the page (not in a textarea for someone to edit), then use ereg_replace or str_replace.
Hope this helps.