HTML Post action sends me to php form - php

Question

I am a complete novice with PHP, I just want a simple email contact form that will display an error if a required field isn't entered, and will give a thank you message if the email is sent.
When I click my submit button the email does get sent but the website redirects straight to the /send-email.php page, which is blank and useless. The required form fields also don't seem to do anything in the way of preventing an email from being sent if the forms aren't filled.
HTML form code:
<form class="contact-form" action="php/send-email.php" method="post" novalidate>
<div class="row">
<div class="column width-6 pad-1 contact-column">
<h5>Your Name*</h5>
<input type="text" name="name" class="form-box" tabindex="1" required>
</div>
<div class="column width-6 pad-1 contact-column">
<h5>Email*</h5>
<input type="text" name="email" class="form-box" tabindex="2" required>
</div>
</div>
<div class="row mt-2">
<div class="column width-6 pad-1 contact-column">
<h5>Your Website</h5>
<input type="text" name="website" class="form-box" tabindex="3">
</div>
<div class="column width-6 pad-1 contact-column">
<h5>Company</h5>
<input type="text" name="company" class="form-box" tabindex="4">
</div>
</div>
<div class="column width-12">
<input type="text" name="honeypot" class="form-honeypot">
</div>
<div class="row mt-2">
<div class="column width-12 pad-1">
<h5>Your Message*</h5>
<textarea name="message" class="form-text" tabindex="5" required></textarea>
</div>
</div>
<div class="row mt-2">
<input type="submit" value="Send Your Message!" class="btn btn-large bg-blue">
</div>
</form>
Php file
<?php
$recipient = "contact#mysite.com";
$name = filter_var($_POST["name"], FILTER_SANITIZE_STRING);
$email = filter_var($_POST["email"], FILTER_SANITIZE_EMAIL);
$website = filter_var($_POST["website"], FILTER_SANITIZE_URL);
$company = filter_var($_POST["company"], FILTER_SANITIZE_STRING);
$message = filter_var($_POST["message"], FILTER_SANITIZE_STRING);
$headers = 'From: '.$name.' <'.$email.'>' . "\r\n";
$headers .= 'Reply-To: '.$email.'' . "\r\n";
$headers .= 'X-Mailer: PHP/' . phpversion();
$subject = "New email from contact form";
$email_content = "Name: $name\n";
$email_content .= "Email: $email\n";
$email_content .= "Website: $website\n";
$email_content .= "Company: $company\n\n";
$email_content .= "Message:\n$message\n\n\n";
if(mail($recipient, $subject, $email_content, $headers)){
echo "Thanks for the email, we'll get back to as soon as possible!";
}
?>
Any help in the right direction is appreciated!

Answer 1

Check for empty input. Try using if else statement. eg.
if($name == '')
{
echo "Please fill in name";
}
else if($var == '')
{
//error message
}
or you can try
if($name == '' || $email == '' || $var == '')
{
echo "Please fill in all the blank";
}
I'm quite new too to PHP, so this is just a simple checking. Hope it'll helps!