Phone field is breaking my contact form [duplicate] - php

Question

This question already has answers here:
"Notice: Undefined variable", "Notice: Undefined index", "Warning: Undefined array key", and "Notice: Undefined offset" using PHP
(29 answers)
Closed 6 years ago.
I am trying to add a telephone field into a contact form but when I do, the script stops working and I don´t receive an email.
<?php
// check if fields passed are empty
if(empty($_POST['name']) ||
empty($_POST['email']) ||
empty($_POST['telephone']) ||
empty($_POST['message']) ||
!filter_var($_POST['email'],FILTER_VALIDATE_EMAIL))
{
echo "No se ha introducido toda la información.";
return false;
}
$name = $_POST['name'];
$email_from = $_POST['email'];
$telephone = $_POST['telephone'];
$message = $_POST['message'];
// create email body and send it
$to = 'h.........#gmail.com'; // put your email
$email_subject = "Formulario de Contacto Con la Mochila al Hombro";
$email_body = "Has recibido un mensaje desde el formulario de contacto de la Web. \n\n".
"Aquí están los detalles:\n\n".
"Nombre: $name \n\n".
"Email: $email_from\n\n".
"Teléfono: $telephone\n\n".
"Mensaje: $message";
$headers = 'From: '.$email_from."\r\n".
'X-Mailer: PHP/' . phpversion();
mail($to,$email_subject,$email_body,$headers);
return true;
?>
And this is the html I am using:
<div class="control-group">
<div class="controls">
<input type="phone" class="form-control" placeholder="Teléfono" id="telephone" required data-validation-required-message="Por favor, dinos tu teléfono para que podamos contactar contigo." />
</div>
</div>
The form works perfectly fine if I don´t put the telephone in the php script, but as soon as I add it, it stops working. I am assuming I am setting some values wrong but I really don´t know much abut PHP.
I believe now that it is a problem with the AJAX validation script.You can see the script live in here http://talleresnaj2.com/js/contacto.min.js

Answer 1

Your <input /> doesn't have a name attribute, hence its value is never sent to the PHP script, making empty($_POST['telephone']) return true.
You just need to add name="telephone" in your input.

Answer 2

You forgot to add the input name.
Try
<input name="telephone" type="phone" class="form-control" placeholder="Teléfono" id="telephone" required data-validation-required-message="Por favor, dinos tu teléfono para que podamos contactar contigo." />