<div class="col-md-12">
<div class="cont_frm">

<form name="sentMessage" id="contactForm" novalidate>
<div class="control-group form-group col-md-6 first">
<div class="controls">
<input type="text" class="form-control" id="name" required data-validation-required-message="Please enter your name." placeholder="Your Name">
<div class="in_ico">
<i class="fa fa-user"></i>
</div>
<p class="help-block"></p>
</div>

<div class="controls">
<input type="email" class="form-control" id="email" required data-validation-required-message="Please enter an email address." placeholder="Email Address">
<div class="in_ico">
<i class="fa fa-envelope-o"></i>
</div>
<p class="help-block"></p>
</div>

<div class="controls">
<input type="number" class="form-control" id="phone" required data-validation-required-message="Please enter your phone number." placeholder="Your Phone">
<div class="in_ico">
<i class="fa fa-phone"></i>
</div>
<p class="help-block"></p>
</div>

<div class="controls last">
<input type="text" class="form-control" id="web" required data-validation-required-message="Please enter your website." placeholder="Website">
<div class="in_ico">
<i class="fa fa-pencil"></i>
</div>
<p class="help-block"></p>
</div>

<div class="clearfix"></div>
</div>

<div class="control-group form-group col-md-6">
<div class="controls">
<textarea rows="10" cols="100" class="form-control" id="message" required data-validation-required-message="Please enter your message" maxlength="999" style="resize:none" placeholder="Message"></textarea>
<div class="in_ico">
<i class="fa fa-paper-plane-o"></i>
</div>
</div>
<button type="submit" class="btn btn-primary">Отправить</button>
</div>
<div class="clearfix"></div>
<div id="success"></div>
<!-- For success/fail messages -->
</form>
</div>

<?php
// check if fields passed are empty
if(empty($_POST['name']) ||
empty($_POST['phone']) ||
empty($_POST['email']) ||
empty($_POST['message']) ||
!filter_var($_POST['email'],FILTER_VALIDATE_EMAIL))
{
echo "No arguments Provided!";
return false;
}

$name = $_POST['name'];
$phone = $_POST['phone'];
$email_address = $_POST['email'];
$message = $_POST['message'];

// create email body and send it
$to = 'your-email@your-domain.com'; // PUT YOUR EMAIL ADDRESS HERE
$email_subject = "Modern Business Contact Form: $name"; // EDIT THE EMAIL SUBJECT LINE HERE
$email_body = "You have received a new message from your website's contact form.\n\n"."Here are the details:\n\nName: $name\n\nPhone: $phone\n\nEmail: $email_address\n\nMessage:\n$message";
$headers = "From: noreply@your-domain.com\n";
$headers .= "Reply-To: $email_address";
mail($to,$email_subject,$email_body,$headers);
return true;
?>