<?php
if ($_POST)
{
    $errors = [];

      if (empty($_POST["user_name"])) {
        $errors['user_name1'] = "Name is required";
      }

      if (empty($_POST["user_nickname"])) {
        $errors['nickname1'] = "Nickname is required";
      }

      //empty($_POST["user_email"])
      if ( empty($_POST["user_email"]) || !filter_var($_POST["user_email"],FILTER_VALIDATE_EMAIL)) {
        $errors['email1'] = "Email is required";
      }


      if (empty($_POST["number_phone"])) {
        $errors['number_phone1'] = "Number Phone is required";
      }

      if (empty($_POST["sujet"])) {
        $errors['sujet1'] = "Response is required";
      }

      if (empty($_POST["message"])) {
        $errors['message1'] = "message is required";
      };

      if (count($errors) == 0)
      {
        header ("Location: success.php");
        exit();
      }



}
?>


<form method="post" target="">
    <div>
      <label  for="name">Name :</label>
      <input type="text"  id="name"  name="user_name">
      <p><?php if (isset($errors['user_name1'])) echo $errors['user_name1']; ?></p>
    </div>
    <div>
      <label  for="nickname">Prénom :</label>
      <input  type="text"  id="nickname"  name="user_nickname">
      <?php if (isset($errors['nickname1'])) echo $errors['nickname1']; ?>
    </div>
    <div>
      <label   for="e-mail">E-mail :</label>
        <input type="email"  id="e-mail"  name="user_email">
        <?php if (isset($errors['email1'])) echo $errors['email1']; ?>
    </div>
    <div>
      <label  for="numberphone">N° de téléphone :</label>
        <input  type="phone"  id="numberphone"  name="number_phone">
        <?php if (isset($errors['number_phone1'])) echo $errors['number_phone1']; ?>
      </div>
    <div>

        <label  for="question">Quel est ta couleure préféré?</label>
        <SELECT  name="sujet" size="1">

            <OPTION>noir
            <OPTION>pourpre
            <OPTION>blanc-cassé
            <OPTION>jaune poussin
            <OPTION>le vert emeraude
       </SELECT>
       <?php if (isset($errors['sujet1'])) echo $errors['sujet1']; ?>
    </div>

    <div>
      <label  for="message">Message :</label>
      <textarea  id="message"  name="message"></textarea>
      <?php if (isset($errors['message1'])) echo $errors['message1']; ?>
    </div>
    <div  class="button">
      <button  type="submit">Envoyer votre message</button>
    </div>
  </form>