Create database using PDO

CREATE DATABASE mydbpdo
SQLSTATE[HY000]: General error: 1007 Can't create database 'mydbpdo'; database exists

<?php
$servername = "localhost";
$username = "username";
$password = "password";

// Create connection
try {
  $conn = new PDO("mysql:host=$servername", $username, $password);
  // set the PDO error mode to exception
  $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
  
  // Create database
  $sql = "CREATE DATABASE myDBPDO";
  // use exec() because no results are returned
  $conn->exec($sql);
  echo "Database created successfully<br>";
} catch(PDOException $e) {
  echo "" . $sql . "<br>" . $e->getMessage() . "";
}

$conn = null;
?>