<?php
$serve
ame = "localhost";
$use
ame = "use
ame";
$password = "password";
$dbname = "myDB";

// Create connection
$conn = new mysqli($serve
ame, $use
ame, $password, $dbname);

// Check connection

if ($conn->connect_error) {

    die("Connection failed: " . $conn->connect_error);
}



$sql = "UPDATE MyGuests SET lastname='Doe' WHERE id=2";


if ($conn->query($sql) === TRUE) {
    echo "Record updated successfully";
} else {
    echo "Error updating record: " . $conn->error;
}

$conn->close();

?>

<?php
$serve
ame = "localhost";
$use
ame = "use
ame";
$password = "password";
$dbname = "myDB";

// Create connection

$conn = mysqli_connect($serve
ame, $use
ame, $password, $dbname);

// Check connection

if (!$conn) {

    die("Connection failed: " . mysqli_connect_error());
}

$sql = "UPDATE MyGuests SET lastname='Doe' WHERE id=2";


if (mysqli_query($conn, $sql)) {
    echo "Record updated successfully";
} else {
    echo "Error updating record: " . mysqli_error($conn);
}

mysqli_close($conn);

?>

<?php
$serve
ame = "localhost";
$use
ame = "use
ame";

$password = "password";
$dbname = "myDBPDO";

try {
    $conn = new PDO("mysql:host=$serve
ame;dbname=$dbname", $use
ame, $password);
    // set the PDO error mode to exception
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

   
$sql = "UPDATE MyGuests SET lastname='Doe' WHERE id=2";


    // Prepare statement
    $stmt = $conn->prepare($sql);

    // execute the query
    $stmt->execute();

    // echo a message to say the UPDATE succeeded
    echo $stmt->rowCount() . " records UPDATED successfully";
    }
catch(PDOException $e)
    {
    echo $sql . "<br>" . $e->getMessage();
    }


$conn = null;

?>