Form Issue unable to show the message " contact shortly plus the website is not able to send a copy to the user

Hello guys! I do have a problem with my web site: the from is able to send the message and the clients receive it but it doesn’t show the message " we contact shortly. In addition, I would send a copy to the clients with my data.

Thank you !!!

<?php if(isset($_POST['email'])) { // EDIT THE 2 LINES BELOW AS REQUIRED $email_to = "antonio@mrspuntini.com"; $email_subject = "Message from Spuntini@Vista"; function died($error) { // your error code can go here echo "We are very sorry, but there were error(s) found with the form you submitted. "; echo "These errors appear below.

"; echo $error."

"; echo "Please go back and fix these errors.

"; die(); } // validation expected data exists if(!isset($_POST['first_name']) || !isset($_POST['last_name']) || !isset($_POST['email']) || !isset($_POST['telephone']) || !isset($_POST['comments'])) { died('We are sorry, but there appears to be a problem with the form you submitted.'); } $first_name = $_POST['first_name']; // required $last_name = $_POST['last_name']; // required $email_from = $_POST['email']; // required $telephone = $_POST['telephone']; // not required $comments = $_POST['comments']; // required $error_message = ""; $email_exp = '/^[A-Za-z0-9._%-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}$/'; if(!preg_match($email_exp,$email_from)) { $error_message .= 'The Email Address you entered does not appear to be valid.
'; } $string_exp = "/^[A-Za-z .'-]+$/"; if(!preg_match($string_exp,$first_name)) { $error_message .= 'The First Name you entered does not appear to be valid.
'; } if(strlen($comments) < 2) { $error_message .= 'The Comments you entered do not appear to be valid.
'; } if(strlen($error_message) > 0) { died($error_message); } $email_message = "Form details below.\n\n"; function clean_string($string) { $bad = array("content-type","bcc:","to:","cc:","href"); return str_replace($bad,"",$string); } $email_message .= "Name: ".clean_string($first_name)."\n"; $email_message .= "Date: ".clean_string($last_name)."\n"; $email_message .= "Email: ".clean_string($email_from)."\n"; $email_message .= "Telephone: ".clean_string($telephone)."\n"; $email_message .= "Comments: ".clean_string($comments)."\n"; // create email headers $headers = 'From: '.$email_from."\r\n". 'Reply-To: '.$email_from."\r\n" . 'X-Mailer: PHP/' . phpversion(); @mail($email_to, $email_subject, $email_message, $headers); header('location: index.html'); ?>

Thank you for contacting us. We will be in touch with you very soon.

<?php } ?>

If you are a beginner checkout http://bitdegree.org or
https://stackoverflow.com/questions/ask to troubleshoot your code with other developers/coders etc. Best checking the documentation for your script and communicating with the script author or troubleshooting it locally or alternative hosting to make sure it isn’t a limitation of the free plan.
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However, you can upgrade your account at https://www.hostinger.com/special/000webhost and we will provide you with full help in installing your scripts, developing your website and fixing errors.

Thank you