help me fix this line of code

[blanius]

I'm using

function has_no_emailheaders($text)
{
   return preg_match("/(%0A|%0D|\\n+|\\r+)(content-type:|to:|cc:|bcc:)/i", $text) == 0;
}

to test mail messages before sending to weed out mail headers. But this always returns 1

What have I done wrong?

[Bobulous]

Well, I can't immediately see what's wrong with your regex, but if you want a quick solution, I've solved this problem for myself when someone was abusing my mailform using header injection:

http://www.bobulous.org.uk/misc/mailformAbuse.html

It works for me. I regularly get messages that report "feedback form abuse" and show me the illegal text and the email address of the spammer.