INSERT

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

try {
    // Create Connection
    $conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password);
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

    //////////////////// INSERT Example //////////////////////////////
    $sql = "INSERT INTO users (first_name, last_name) VALUES (:first_name, :last_name)";

    $stmt = $conn->prepare($sql);
    $stmt->bindParam(':first_name', $first_name);
    $stmt->bindParam(':last_name', $last_name);

    $first_name = "Donald"
    $last_name = "Trump";
    $stmt->execute();

    echo "Inserted user with id: " . $conn->lastInsertId();
}
catch(PDOException $e)
{
    echo "Error: " . $e->getMessage();
}

$conn = null;
?>