need help on form required fields option

[pixeltrace]

guys,

i need help.... how can i set my form in such a way that the sender must either fill up
either 1 of the 2 fields?

example

name:
company:
email address:

on my condition, email address is required but for name and company, he can either fill up just one of them.
otherwise an error will appear.

from this code what should i do here to fix my problem?

thanks!

[code]echo "<CENTER>";
if (($name == "") || ($company == "") || ($email == "")) {
echo '<br><br><span class="bodytext3">Please complete the form. Thanks!</span><br>';
exit;
}

if(!email_is_valid($email)) {
echo '<br><br><span class="bodytext3"><br>Email Address Invalid. <br>Please use a valid Email Address</span><br>';
echo '<span class="bodytext3"><br>Thank You!</span><br>';           
        exit;
}

[/code]

[jpratt]

what if you tried adding a set of parens around your if statement like so and use the and operator instead:

[code]
if (($name == "") || (($company == "") && ($email == ""))) {
[/code]