Ajax sending files to email?

Question

PHP

Hello, how can I make the files from the form come to the mail?
Now only text fields come. Please help, I'm not strong in php

<form class="hide-form" id="forma1">

            <!-- Hidden Required Fields -->
            <input type="hidden" name="Project" value="Сайт Креслико">
            <input type="hidden" name="admin_email" value="[email protected]">
            <input type="hidden" name="form_subject" value="Заявка с формы оценки проекта">
            <!-- End Hidden Required Fields -->

            <div class="succsess-form">
              <div class="suc-bg">
                <!-- <span class="criste">	&times; </span> -->
                <span class="h2">
                  Спасибо!
                </span>
                <p class="suc-text">Ваша заявка успешно принята, наш менеджер свяжется с <br> Вами в ближайшее время!</p>
              </div>
            </div>

            <span class="h3">Пример изготовления <br> по эскизу заказчика</span>

            <input class="input-st" type="text" name="email" placeholder="Введите Ваш email" required>
            <input class="input-st" id="phone1" type="tel" name="phone" placeholder="Введите Ваш телефон" required>

            <div class="file-upload">
              <label>
                <input name="file" type="file" required>
                <span> Загрузите файл</span>
              </label>
            </div>
            <input type="text" id="filename" class="filename" disabled>

            <button class="orange-btn">Отправить на оценку проект</button>

            <input name="Передача информации" id="my_check1" type="checkbox" checked="checked" required>
            <label for="my_check1">Я принимаю <a class="cheked1" href="#">условия передачи информации</a></label>
            <!-- <span class="label">Я принимаю <a href="#">условия передачи информации</a></span> -->

          </form>

$(".hide-form").submit(function() { //Change
    var th = $(this);
    $.ajax({
      type: "POST",
      url: "mail.php", //Change
      data: th.serialize()
    }).done(function() {
      $(th).find(".succsess-form").addClass("active").css("display", "flex").hide().fadeIn();
      setTimeout(function() {
        $(th).find(".succsess-form").removeClass("active").fadeOut();
        th.trigger("reset");
      }, 3000);
    });
    return false;
  });

<?php

$method = $_SERVER['REQUEST_METHOD'];

//Script Foreach
$c = true;
if ( $method === 'POST' ) {

  $project_name = trim($_POST["project_name"]);
  $admin_email  = trim($_POST["admin_email"]);
  $form_subject = trim($_POST["form_subject"]);

  foreach ( $_POST as $key => $value ) {
    if ( $value != "" && $key != "project_name" && $key != "admin_email" && $key != "form_subject" ) {
      $message .= "
      " . ( ($c = !$c) ? '<tr>':'<tr style="background-color: #f8f8f8;">' ) . "
      <td style='padding: 10px; border: #e9e9e9 1px solid;'><b>$key</b></td>
      <td style='padding: 10px; border: #e9e9e9 1px solid;'>$value</td>
    </tr>
    ";
  }
}
} else if ( $method === 'GET' ) {

  $project_name = trim($_GET["project_name"]);
  $admin_email  = trim($_GET["admin_email"]);
  $form_subject = trim($_GET["form_subject"]);

  foreach ( $_GET as $key => $value ) {
    if ( $value != "" && $key != "project_name" && $key != "admin_email" && $key != "form_subject" ) {
      $message .= "
      " . ( ($c = !$c) ? '<tr>':'<tr style="background-color: #f8f8f8;">' ) . "
      <td style='padding: 10px; border: #e9e9e9 1px solid;'><b>$key</b></td>
      <td style='padding: 10px; border: #e9e9e9 1px solid;'>$value</td>
    </tr>
    ";
  }
}
}

$message = "<table style='width: 100%;'>$message</table>";

function adopt($text) {
  return '=?UTF-8?B?'.base64_encode($text).'?=';
}

$headers = "MIME-Version: 1.0" . PHP_EOL .
"Content-Type: text/html; charset=utf-8" . PHP_EOL .
'From: '.adopt($project_name).' <'.$admin_email.'>' . PHP_EOL .
'Reply-To: '.$admin_email.'' . PHP_EOL;

mail($admin_email, adopt($form_subject), $message, $headers );

Answer 1

Hello, how can I make the files from the form come to the mail?

Perfectly files are transferred by Ajax. True, in the example by reference - without jQuery.
https://js-master.ru/?Javascripts___Free_hide...