Simple form to insert into Database using PDO

PDO INSERT INTO DATABASE

<?php 
  
        if(isset($_POST['submit'])){
           try{
                $DB = new PDO('mysql:host=localhost; dbname=databasename;', 'user', 'pass');
                $DB->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
            }catch(PDOException $error){
                echo 'Database connection error';
            } 

            $stmt = $DB->prepare("INSERT INTO tableName (name, email) VALUES(:name, :email)");

            $stmt -> bindParam(":name", $_POST["name"], PDO::PARAM_STR);
            $stmt -> bindParam(":email", $_POST["email"], PDO::PARAM_STR);

            $stmt->execute();

        }
    
        
     ?>


     <div class="container">
         <form method="post" action="index.php">
             <input type="text" name="name" placeholder="Name Here">
             <input type="email" name="email" placeholder="email Here">
             <input type="submit" name="submit">
         </form>
     </div>