<?php
// Get current post category
$category = get_the_category();
$category_slug = !empty($category) ? $category[0]->slug : '';

// Define ad zone mappings
$ad_zones = [
    'dining' => '495',
    'nightlife' => '496',
    // Add more mappings
];

// If we have a matching ad zone for this category
if (isset($ad_zones[$category_slug])) {
    $zone_id = $ad_zones[$category_slug];
    echo '<ins data-revive-zoneid="' . $zone_id . '" data-revive-id="1bbb33b30cedcbfeeb380aface2ebc8f"></ins>';
    echo '<script async src="//adserver.sgmagazine.com/delivery/asyncjs.php"></script>';
}
?>