post php from inout code example

Example 1: how to request user input in php

<?php
echo "What do you want to input? ";
$input = rtrim(fgets(STDIN));
echo "I got it:\n" . $input;

Example 2: how to form data to another file in php

<form action="demo/request-variable.php" method="post">

<input type="text" name="firstname" placeholder="First Name" />

<input type="text" name="lastname" placeholder="Last Name" />

<input type="submit" name="submit" />
</form>