/favicon.php

// Determine the favicon file to serve (prefer .ico then png)
$base = __DIR__ . '/assets/img';
$ico = $base . '/favicon.ico';
$png = $base . '/favicon.png';

if (file_exists($ico)) {
    header('Content-Type: image/x-icon');
    header('Content-Length: ' . filesize($ico));
    readfile($ico);
    exit;
}

if (file_exists($png)) {
    header('Content-Type: image/png');
    header('Content-Length: ' . filesize($png));
    readfile($png);
    exit;
}

// Fallback: 1x1 transparent GIF
header('Content-Type: image/gif');
echo base64_decode('R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==');
exit;