function connect(){

$dbName = 'blog';
$dbHost = 'localhost';
$dbUser = 'root';
$dbPass = '';

      $db = new PDO( "mysql:dbname=$dbName;host=$dbHost" , $dbUser , $dbPass );

      $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
}

function getPost($postSlug) {
    connect();
try {
    $sql = $db->prepare("SELECT * FROM posts WHERE postSlug = ?");
    $sql->bindParam(1, $postSlug);
    $post = array();

    if ($sql->execute()) {
        while ($post = $sql->fetch(PDO::FETCH_ASSOC)) {
    ?>
          <!-- Blog Article -->
          <div class="card mb-4">
            <img class="card-img-top" src="/blog/assets/images/<?php echo $post['postImage']; ?>" alt="Card image cap">
            <div class="card-body">
              <h2 class="card-title"><?php echo $post['postTitle']; ?></h2>
              <p class="card-text"><?php echo $post['postContent']; ?></p>
            </div>
            <div class="card-footer text-muted">
              Posted on <?php echo $post['postDate']; ?> by
              <a href="#"><?php echo $post['postAuthorId']; ?></a>
            </div>
          </div>
    <?php
        }
    }
    } catch ( PDOException $e) {
        echo $e->getMessage();
        $sql = null;
    }
}