PHP Mail form - changing mandatory field into optional

programming
1

I would like to make an email field to be optional -
could you help in modifying this code?

<?php
$emailku="user@yahoo.com"; // your email address to send to
$validResponse=“Thank you for your interest in our company. We will respond to your request shortly.”; // your response message appeared in flash after sending
$nonValidResponse=“INVALID EMAIL FORMAT. PLEASE TRY AGAIN …”;

$regex="^([a-zA-Z0-9._-]+)@([a-zA-Z0-9-])+(.[a-zA-z0-9-]+)+$";
$email=strtolower($email);
$subjectEmail = “website mail[$name1]”;

$messageTotal = "First Name    : $name1
Last Name    : $name2

Address : $address
City    : $city
State   : $state1
Zip     : $zip


Email   : $email
Phone   : $phone



How did you hear about us? : $hear


Additional Comments? : $help

Points of interest : $villa
";

mail($emailku,$subjectEmail,$messageTotal,"From:$email

Reply-to: $email
“);
//add and change email to send copy to another address
//mail("myother@email.com”,$subjectEmail,$messageTotal,"From:$email
Reply-to: $email
");

print “&answer=”.urlencode($validResponse);

?>

Here is my Actionscript:

stop();

sta="";
name1.tabIndex = 1;
name2.tabIndex = 2;
address.tabIndex = 3;
city.tabIndex = 4;
zip.tabIndex = 5;
email.tabIndex = 6;
phone.tabIndex = 7;
help.tabIndex = 8;

function validate (address) {
/if (address.length>=7) {
if (address.indexOf("@")>0) {
if ((address.indexOf("@")+2)<address.lastIndexOf(".")) {
if (address.lastIndexOf(".")<(address.length-2)) {
return (true);
}
}
}
}/
return (true);
}

function formcheck () {
//if ( (email.indexOf("@") >0) ){// && email.indexOf(".") > email.indexOf("@")+1 ) {
//if ( (email == null) || (email.length<1) || (name1 == null) || (name1.length<1) || (name2 == null) || (name2.length<1) || (address == null) || (address.length<1) && (city == null) ||(city.length<1) || (zip == null) || (zip.length<1) || (phone == null) || (phone.length<1) ){
if ( (email == null) || (email.length<1) || (name1 == null) || (name1.length<1) || (name2 == null) || (name2.length<1) ){ //only name help and email is mandatory
sta= “Please fill in the fields”;
}else if (!validate(email))
{
sta = “Email not valid”;
}else{
sta=“ok”;
state1 = cb_state.text;
jenisphone = cb_phone.text;

hear="";
if (h1.selected==true){
	hear += " Referral  ";
	};
if (h2.selected==true){
	hear += " Advertising  ";
	};
if (h3.selected==true){
	hear += " Online ";
	};
if (h4.selected==true){
	hear += " Neighborhood Sign ";
	};

villa ="";
if (cek1.selected==true){
	villa += " Roofing  ";
	};
if (cek2.selected==true){
	villa += " Siding  ";
	};
if (cek3.selected==true){
	villa += " Fascia and Soffit   ";
	};
if (cek4.selected==true){
	villa += " Vinyl Replacement Windows ";
	};
if (cek5.selected==true){
	villa += " Seamless Gutters  ";
	};
if (cek6.selected==true){
	villa += " Retail Estimate   ";
	};
if (cek7.selected==true){
	villa += " Storm Damage ";
	};
if (cek8.selected==true){
	villa += " Employment Ops ";
	};
	
loadVariables("mailer.php", this, "POST");
gotoAndStop("wait");
}

}