PHP exam 29 August Evening 01. Email Encryptor

01Email_Encryptor.php

<?php

$recipient = $_GET['recipient'];
$subject = $_GET['subject'];
$body = $_GET['body'];
$key = $_GET['key'];

$formattedRecipient = htmlspecialchars($recipient);
$formattedSubject = htmlspecialchars($subject);
$formattedBody = htmlspecialchars($body);

$formattedMessage = "<p class='recipient'>$formattedRecipient</p><p class='subject'>$formattedSubject</p><p class='message'>$formattedBody</p>";

$key2 = $key;
$newKey = str_pad($key, strlen($formattedMessage), $key2);

for ($i = 0; $i < strlen($formattedMessage); $i++) {
    $item = ord ($formattedMessage[$i]) * ord ($newKey[$i]);
    $hex = dechex($item);
    echo "|" . $hex;
}
echo "|";