auto-insert html "br" at end of line in database entries

on a script that i wrote solely for myself (simple reminders script with content feed or whatnot lol), i was wondering how, when someone presses enter thus making a new line, the html code "br" or "p" can automatically be entered??

nl2br()

this will convert \r\n to <br>

so when you hit enter it will replace that with <br>

where do i enter nl2br() ?

when you submit the data, lets say from a textarea called test

echo nl2br($_POST['test']);

This would print the variable with br tags

try this
function ReplaceStr($str)
{
$str = ereg_replace("\r\n", "<br>", $str);
echo $str;
}

call this function like this

ReplaceStr($myrow['textfield']);

dog, that does the exact same thing as nl2br, so why redifine a function that already exists?? The only difference between your function and nl2br, is that your functions echos the data, while nl2br returns the value. which just means you have to echo the function.