jqueryはデータベースに書き込むことができますか?

<form>
  <input type="text" id="name" placeholder="Name">
  <input type="text" id="email" placeholder="Email">
  <button id="submit">Submit</button>
</form>

$('#submit').click(function() {
  var name = $('#name').val();
  var email = $('#email').val();

  $.ajax({
    url: 'write_to_database.php',
    type: 'POST',
    data: {
      name: name,
      email: email
    },
    success: function(response) {
      console.log(response);
      alert('Data saved to database.');
    },
    error: function(xhr, status, error) {
      console.log(xhr.responseText);
      alert('An error occurred while saving data to database.');
    }
  });
});

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

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
  die("Connection failed: " . $conn->connect_error);
}

// Get data from Ajax request
$name = $_POST['name'];
$email = $_POST['email'];

// Write data to database
$sql = "INSERT INTO customers (name, email) VALUES ('$name', '$email')";

if ($conn->query($sql) === TRUE) {
  echo "Data saved to database.";
} else {
  echo "Error: " . $sql . "<br>" . $conn->error;
}

$conn->close();
?>