Why isn't HTML form data being sent to mail by PHP?

Question

PHP

Why is this form not being sent by email?
The form:

<form action="handlers/handler.php" method="POST">
              <div class="form-input form-input-name">
                <input type="text" name="name" placeholder="Введите имя" minlength="2" size="14" required>
              </div>
              <div class="form-input">
                <input id="phone-header" type="text" name="phone" placeholder="Введите телефон" size="14" required>
              </div>
              <div class="form-btn">
                <button class="button orange" style="color: #FFF;" type="submit">Отправить</button>
              </div>
                                                </form>

PHP handler:

<?php
$name = $_POST['name'];
$email = $_POST['email'];
$name = htmlspecialchars($name);
$phone = htmlspecialchars($phone);
$name = urldecode($name);
$phone = urldecode($phone);
$name = trim($name);
$phone = trim($phone);
if (mail("[email protected]", "Заявка с сайта", "Имя:".$name.". Телефон: ".$phone ,"From: [email protected] \r\n"))
 {     echo "сообщение успешно отправлено";
} else {
    echo "при отправке сообщения возникли ошибки";
}?>

Answer 1

At least by the fact that you have a group of tasks submitted as one question. First determine at what stage you are failing, and then ask a specific question about a specific problem. var_dump() to help. And the order in the code... is missing, half of the variables, hell knows where it came from, the second is not used anywhere...