PHP,PDO和MySQL - 无法建立与数据库的连接[重复]

This is my first time using PHP to read/write to a MySQL database and I'm stuck on step one. I am following the w3schools guide and created a php file named "welcome.php" which I can view by navigating to localhost/dbpopulate/welcome.php.

The HTML / PHP for this is:

<!DOCTYPE html>
<html>
<body>

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

try {
    $conn = new PDO("mysql:host=$servername;dbname=user", $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();
    }
?> 


</body>
</html> 

I can access this 'user' database using the 'default' password without issue from inside and outside of my network on a multitude of devices. When I attempt to access the page, I receive this error:

Parse error: syntax error, unexpected '$conn' (T_VARIABLE) in C:\wamp64\www\DBPopulate\welcome.php on line 11

Line 11 is:

$conn = new PDO("mysql:host=$servername;dbname=user", $username, $password);

Thanks!

</div>