Cutting off end of variable

[zX_Storm]

$email = $cheatinf[8];
$emaillen = strpos($email, "@");
$email2 = substr($email, 0, $emaillen);

Makes $email2 come up as null. $cheatinf[8] returns the e-mail address. [e-mail] I'm trying to get it to cut off everything past the @. Can someone help me?

[azkworld]

Syntax seems right. Perhaps some other problem?
All I can suggest:
$email = $cheatinf[8];
echo("$email<BR>");
$emaillen = strpos($email, "@");
echo("$emaillen<BR>");
$email2 = substr($email, 0, $emaillen);
echo("$email2<BR>");