WP_Saisonlogo_Roterater_(Auto_Scan_Hack) 1.0.0

<?php
header('Content-Type: application/json');
$allowed = ['webp', 'png', 'jpg', 'jpeg', 'gif', 'svg'];
$files = [];
foreach (scandir(__DIR__) as $file) {
    if ($file === '.' || $file === '..' || $file === 'list.php') continue;
    if (in_array(strtolower(pathinfo($file, PATHINFO_EXTENSION)), $allowed, true)) {
        $files[] = $file;
    }
}
echo json_encode($files);

.p-header-logo {
    position: relative;
    width: 350px;
    height: 300px;
}
.p-header-logo img {
    visibility: hidden;
}
.p-header-logo::before {
    content: "";
    position: absolute;
    inset: 0;
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
}

<script>
(async function () {
    const folderPath = '/styles/season_logos/';
    try {
        const res = await fetch(folderPath + 'list.php');
        if (!res.ok) return;
        const logos = await res.json();
        if (!logos.length) return;
        const logo = logos[Math.floor(Math.random() * logos.length)];
        const style = document.createElement('style');
        style.textContent = `
            .p-header-logo::before {
                background-image: url("${folderPath}${logo}");
            }
        `;
        document.head.appendChild(style);
    } catch (e) {}
})();
</script>