index.php

<?php
$insert = false;
if(isset($_POST['name'])){
    // Set connection variables
    $server =  getenv('DB_HOST');
    $username = getenv('DB_USERNAME');
    $password = getenv('DB_PASSWORD');

    // Create a database connection
    $con = mysqli_connect($server, $username, $password);

    // Check for connection success
    if(!$con){
        die("connection to this database failed due to" . mysqli_connect_error());
    }
    // echo "Success connecting to the db";

    // Collect post variables
    $name = $_POST['name'];
    $gender = $_POST['gender'];
    $age = $_POST['age'];
    $email = $_POST['email'];
    $phone = $_POST['phone'];
    $desc = $_POST['desc'];
    $sql = "INSERT INTO `mussorie trip`.`mussorie trip` (`name`, `age`, `gender`, `email`, `phone`, `other`, `dt`) VALUES ('$name', '$age', '$gender', '$email', '$phone', '$desc', current_timestamp());";
    // echo $sql;

    // Execute the query