Need little help in my sendmail.php

thanks for helping me guys. here is my basic sendmail.php

<?php
	$from = 'test@testing.threadpunk.com';
	$to = 'sakib.live@gmail.com'; 
	$subject = "Product order at angross.com";
	$plan = $_POST['product'];
	$extrapages = $_POST['additional'];
	$purpose = $_POST['mainpurpose'];
	$visitordetails = $_POST['visitorsdetails'];
	$youlike = $_POST['sitesyoulike'];
	$dontlike = $_POST['sitesyoudontlike'];
	$colortheme = $_POST['colorguides'];
	$adddetails = $_POST['details'];
	$logopref = $_POST['logo'];
	$fname = $_POST['firstname'];
	$lname = $_POST['lastname'];
	$comname = $_POST['companyname'];
	$mailadd1 = $_POST['email1'];
	$mailadd2 = $_POST['email2'];
	$pass1 = $_POST['password'];
	$pass2 = $_POST['password2'];
	$phonenumber = $_POST['phone'];
	$straddress = $_POST['streetaddress'];
	$cityname = $_POST['city'];
	$statename = $_POST['state'];
	$zip = $_POST['postal'];
	$name = $_POST['country'];
	$howfind = $_POST['howfindus'];

	foreach($_POST['check'] as $value) {
	$check_msg .= "Checked: $value\n";
}
	
mail("$to", "$subject", "$plan \n $extrapages \n $purpose \n $visitordetails \n $youlike \n $dontlike \n  $sitesyoudontlike \n $colortheme \n $adddetails \n $logopref \n $fname \n $lname \n $comname \n $mailadd1 \n $mailadd2 \n $pass1 \n $pass2 \n $phonenumber \n $straddress \n $cityname \n $statename \n $zip \n $name \n $howfind \n  $check_msg","From:$from");

?>

Code (markup):

Can someone please configure it to check whether two password fields are same or not. if OK script just send a mail, if not OK script just display error message that email fields are not same or password fields are not same.

Someone gave me this code

<?php

if(($_POST["email"] == $_POST["email2"]) && ($_POST["password"]==$_POST["password2"])){

    //If all fields are valid
    header('Location:success.html');

}
else {

    //If they are not valid
    header('Location:failed.html');

}

?> 

Code (markup):

but i dont know enough php to use it

one more thing, mail client inbox is showing 'from' correctly but send-by is hostgator.com. I don't even know this little thing

Thanks

 

put the second code before :

mail("$to", "$s.....

PHP:

and create success.html ,failed.html in root ... I guess that's it !!