text formatting in php?

Hi, I have a form with a textarea. Realizing that "wrap" isn't a standard, and isn't recognized by all browsers, it really is only useful to the user while he's filling in the textarea. I want to email the contents of that textarea, and I want that text to be line wrapped at 72 characters or sooner so that words are not split in half. I could probably do some really ugly hack with exec(fmt), for example, but can PHP handle this natively? I want to take this: $comments = "hello, i'm typing into this textbox and although it appears to wrap lines when the form gets emailed the lines are not wrapped at all. I would like to have line wrapping at 72 characters in my email."; And turn it into this (notice the \r\n sequences in two places): $comments = "hello, i'm typing into this textbox and although it appears to wrap lines\r\nwhen the form gets emailed the lines are not wrapped at all. I would\r\nreally like to have line wrapping at 72 characters in my email."; And how can I ensure that if the user hits enter twice, to make a new paragraph, that it is also displayed like that in the email? Thanks, Mike