connect php to mysql pdo

<?php 
  
	$pdo = new PDO('mysql:host=localhost;
  				dbname=the_name_of_your_databe,
  				'username', 
                'password'');
# by default your username is root 
# if you don't have a password don't fill in it

#(optional) : 
	$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
	$pdo->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_OBJ);

?>

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

 $password = "password";

try {
    $conn = new PDO("mysql:host=$servername;dbname=myDB", $username, $password);
    // set the PDO error mode to exception
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    echo "Connected successfully";
 
    }
catch(PDOException $e)
    {
    echo "Connection failed: " . $e->getMessage();
    }

?>