autre.php

<?php
$servername = "127.0.0.1";
$dbname = "neridaar";
$username = "ID";
$password = "MDP";

    $bdd = new PDO("mysql:host=$servername;port=3306;dbname=$dbname; charset=utf8", $username, $password, array(PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION));
    if(isset($_POST['article_titre'], $_POST['article_contenu'])) {
        if(!empty($_POST['article_titre']) AND !empty($_POST['article_contenu'])){

            $article_titre = htmlspecialchars($_POST['article_titre']);
            $article_contenu = htmlspecialchars($_POST['article_contenu']);

            $ins = $bdd->prepare('INSERT INTO articles (titre, contenu, date_time_publication)
                VALUES (?,?, NOW())');
            $ins->execute(array($article_titre, $article_contenu));

            $message = "Votre article à bien été posté.";


        } else {
            $message = "Veuillez remplir tous les champs";
        }
    }
?>


<!DOCTYPE html>
<html lang="fr">
<head>
    <meta charset="UTF-8">
    <title>Site Neridaar</title>
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.0/js/bootstrap.min.js"></script>
    <link rel="stylesheet" href="../css/styles.css">
</head>
<body>
    <nav class="navbar navbar-expand-md bg-dark navbar-dark sticky-top">
      <a class="navbar-brand" href="#">Neridaar</a>
      <button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navb" aria-expanded="true">
        <span class="navbar-toggler-icon"></span>
      </button>
      <div id="navb" class="navbar-collapse collapse hide">
        <ul class="navbar-nav">
          <li class="nav-item">
            <a class="nav-link" href="../html/index.php">Accueil</a>
          </li>
          <li class="nav-item active">
            <a class="nav-link" href="../html/autre.php">Autre</a>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="../html/article.php">Article</a>
          </li>
        </ul>

        <ul class="nav navbar-nav ml-auto">
          <li class="nav-item">
            <a class="nav-link" href="../html/connexion.php"><span class="fas fa-sign-in-alt"></span> Login</a>
          </li>
        </ul>
      </div>
    </nav>


<form action="" method="POST">
    <input class="champs" type="text" name="article_titre" placeholder="Titre"><br>
    <textarea name="article_contenu" class="textArticle" placeholder="Rediger un article..."></textarea><br><br>
    <input type="submit" class="btn_sub" name="submit" value="Poster">
</form>

<?php
    if(isset($message)) {
        echo $message;
    }
?>

</body>
</html>