Display php code in php page

<?php
//Database connection in php

$host='localhost';
$username='root';
$password='';
$dbname='myprojectdb';

$conn=mysqli_connect($host,$username,$password,$dbname);

//Delete query in php

$sql="DELETE FROM `member` WHERE `id`='".trim($_REQUEST['id'])."'";
$res=mysqli_query($conn,$sql);

?>