why they didn't used the comment's code line in the first line? like this👇🏻

Question

<?php
👉// This is a single-line comment👈
echo "<p>Hello World!</p>";

echo "<p>I am learning PHP!</p>";
echo "<p>This is my first program!</p>";
?>

Answer 1

Who are they?

Answer 2

Maybe it's a conspiracy

Answer 3

Who are they, huh?