PHP connection to a MySQL database

add.php

<?php
  
    $servername = "xxx.xxx.xxx.xxx"; 
    $username = "username";
    $password = "******";
    $database = "name"; 
    $table    = "data";

    // your data here depending on things coded in the front end
     $question              = $_POST['question'];
     $answer                 = $_POST['answer'];
 
    
    // Create connection
    $conn = new mysqli($servername, $username, $password, $database);

    // Check connection
    if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
    }
    echo "Connected successfully";


    $sql = "INSERT INTO data ( question, answer)
    VALUES ('$question', '$answer')";

    if ($conn->query($sql) === TRUE) {
    echo "New record created successfully";
    } else {
    echo "Error: " . $sql . "<br>" . $conn->error;
    }

?>