flash.moe/pages/blog.php

<?php
if(preg_match('#^/blog/([0-9]+)$#', $reqPath, $matches) || $reqPath === '/blog.php' || $reqPath === '/blog-post.php') {
    if($reqMethod !== 'GET')
        return FM_ERR | 405;
    header('Location: //flash.moe/2020/blog.php?blog=1&p=' . ($matches[1] ?? filter_input(INPUT_GET, 'p', FILTER_SANITIZE_NUMBER_INT) ?? ''));
    return FM_HIT | 302;
}

if($reqPath === '/blog-assets.json') {
    if($reqMethod !== 'GET')
        return FM_ERR | 405;

    header('Content-Type: application/json; charset=utf-8');

    echo json_encode([
        'header_backgrounds' => FM_BGS,
        'footer_quotes' => FM_FEET,
    ]);

    return FM_HIT;
}