PHP - MySQL

<?php

$host = 'localhost';
$user = "root";
$pass = 'abc123';
$db = 'ITDB';
$sql = 'SELECT * FROM GradeTB';

$conn = mysqli_connect($host, $user, $pass, $db);

// Check connection
if (mysqli_connect_errno()) {
    echo "Failed to connect to MySQL: " . mysqli_connect_error();
}

$result = mysqli_query($conn, $sql);

while($row = mysqli_fetch_array($result)){
    echo "Name: {$row['name']} <br> Email: {$row['email']} <br>";
}
mysqli_close($conn);

?>