[?] Whats wrong with this php form :'(

this is my contact form. but when i click send an ERROR happen

index.php source:

<form action="mail.php" method="post">
name <input type="text" name="name" size="40">
family <input type="text" name="family" size="40">
phone <input type="text" name="phone" size="40">
address <input type="text" name="address" size="40">
<input type="submit" value="send">
</form>

Code (markup):

mail.php source:

<?php
$to="info@example.tld";
$subject="feedback";
$from="visitor@example.tld";
$name=$_POST['name'];
$family=$_POST['family'];
$phone=$_POST['phone'];
$address=$_POST['address'];
$headers = 'MIME-Version: 1.0' . "\r\n";
$headers .= 'Content-type: text/html; charset=utf-8' . "\r\n";
$headers .= 'To: '.$to . "\r\n";
$headers .= 'From: '.$from . "\r\n";
$headers .= 'Reply-To: '.$from . "\r\n";
$sendmail=mail($to, $subject, $name, $family, $phone, $address, $headers);
if ($sendmail)
echo "sent";
else
echo "failed";
?>

Code (markup):

please correct it and place here. thank you very much

 

<?php

$to='info@example.tld';
$subject='feedback';
$from='visitor@example.tld';

// NOTE: You should validate all data coming from forms -
// ESPECIALLY IN EMAIL FORMS!
$name=$_POST['name'];
$family=$_POST['family'];
$phone=$_POST['phone'];
$address=$_POST['address'];

$message = "Name: $name\nFamily: $family\nPhone: $phone\nAddress: $address";

$headers = 'MIME-Version: 1.0' . "\r\n";
$headers .= 'Content-type: text/html; charset=utf-8' . "\r\n";
$headers .= 'From: '.$from . "\r\n";
$headers .= 'Reply-To: '.$from . "\r\n";

// bool mail( string $to  , string $subject  , string $message  , string $additional_headers)
$sendmail=mail($to, $subject, $message, $headers);
if ($sendmail)
echo "sent";
else
echo "failed";
?>

Code (markup):