Find-Latest-Newsletter.PHP

<?php
// "LatestNewsletter.php"

// Within the folder media/news, there are sub-folders for each volume (year) of newsletter
// These are named V1, V2, V3 etc.
// Within each Volume folder, there are newsletters named VnNn.pdf, e.g, V3N1.pdf, V3N2.pdf etc. for volume 3
// This code finds the most recent newsletter for the current year, given that Volume 1 was year 2020

// Determine the current year
$currentYear = date('Y');

// Determine the volume based on the current year
$volume = 'V' . ($currentYear - 2019);  // Assuming volume 1 corresponds to year 2020

// Set the base directory where newsletters for the current year are stored
$newsletterDirectory = 'media/news/' . $volume . "/";

// Initialize variables to keep track of the latest newsletter found
$latestNewsletter = '';
$newsletterNumber = 1;

// Loop through each newsletter for the current volume until it fails to find one
while (file_exists($newsletterDirectory . $volume . 'N' . $newsletterNumber . '.pdf')) {
    $latestNewsletter = $volume . 'N' . $newsletterNumber . '.pdf';
    $newsletterNumber++;
}

// If no newsletters were found, send an error message
if (empty($latestNewsletter)) {
    echo 'No newsletters found for volume ' . $volume . '.    ' . $newsletterDirectory . "    " . $newsletterNumber;
} else {
    // Generate the link to the latest newsletter
    $latestNewsletterLink = $newsletterDirectory . $latestNewsletter;
    // Send the link to the front-end code
    echo $latestNewsletterLink;
}
?>