function log_error($message) {
    file_put_contents('php_errors.log', date('Y-m-d H:i:s')." - ".$message.PHP_EOL);
}

async function getRutubePreview(id) {
let url = `https://rutube.ru/api/video/${id}/thumbnail/`;    
let response = await fetch(url);

if (response.ok) { 
  let json = await response.json();
  console.log(json.url);
  return json.url;  
    
} else {
  return `{"error": "Ошибка HTTP: ${response.status}")`;
}
}
getRutubePreview('86da488c8e7f1427049c2f2fea207989');

  # Удаляем index.php из адреса
  RewriteCond %{THE_REQUEST} ^GET.*index.php [NC]
  # Не применяем к админке, иначе перестает работать страница Highload-блоки
  RewriteCond %{REQUEST_URI} !/bitrix/admin/.* [NC]
  RewriteCond %{REQUEST_URI} !^/bitrix/tools/ [NC]
  RewriteRule (.*?)index.php/*(.*) https://%{HTTP_HOST}/$1$2 [R=301,NE,L]

последний день месяца
$d = new DateTime('now'); 
$priceValidUntil = $d->format('Y-m-t');

$info = pathinfo($file);
$file_name =  basename($file,'.'.$info['extension']);

'cache' => array(
       'value' => array (
          'type' => 'memcache',
          'memcache' => array(
              'host' => 'localhost',
              'port' => '11211'
          ),
          'sid' => $_SERVER["DOCUMENT_ROOT"]."#01"
       ),
    ),

Модуль конвертации картинок для Битрикс
https://marketplace.1c-bitrix.ru/solutions/dev2fun.imagecompress/

$ipropValues = new BitrixIblockInheritedPropertyElementValues(
    $arParams['IBLOCK_ID'],
    $arResult["ID"]
);
$arResult["IPROPERTY_VALUES"] = $ipropValues->getValues();

// определим константу LOG_FILENAME, в которой зададим путь к лог-файлу
define("LOG_FILENAME", $_SERVER["DOCUMENT_ROOT"]."/mylog-6665444.txt");
//дебаг почты
function custom_mail($to, $subject, $message, $additional_headers='', $additional_parameters='')
{
   AddMessage2Log(
            'To: '.$to.PHP_EOL.
            'Subject: '.$subject.PHP_EOL.
            'Message: '.$message.PHP_EOL.
            'Headers: '.$additional_headers.PHP_EOL.
            'Params: '.$additional_parameters.PHP_EOL
         );
   if ($additional_parameters!='') {
      return @mail($to, $subject, $message, $additional_headers, $additional_parameters);
   } else {
       return @mail($to, $subject, $message, $additional_headers);
   }
}

<?=(date('W') + 5) % 5 + 1?>

Знак рубля ₽

CFile::ShowImage($img, $width, $height);

docker-compose up -d

system('tail -n 100 /home/bitrix/.msmtprc')

<meta http-equiv="refresh" content="0;url=https://spa-cavefish.ru/odintsovo">

<div><?=(new CBXSanitizer)->sanitizeHtml($foo);?></div>

$login = $DB->ForSql($_REQUEST['login']);
$res = $DB->Query("SELECT * FROM b_user WHERE LOGIN='$login'");

$arInsert = $DB->PrepareInsert("b_user", ["LOGIN" => $_REQUEST["login"]]);
$sql = "INSERT INTO b_user (".$arInsert[0].") VALUES (".$arInsert[1].")";
$res = $DB->Query($sql);

Внутрь хед ставим
<script src="https://www.google.com/recaptcha/enterprise.js?render=6LfM-tUqAAAAAAK871StVSv4ssTIyIeOk7I7&hl=ru&badge=bottomleft"></script>
и
<script>
        function onClick(e) {
        e.preventDefault();
        grecaptcha.enterprise.ready(async () => {
            const token = await grecaptcha.enterprise.execute('6LfM-tUqAAAAAAK871StVSv4ssTsjweIyIeOk7I7', {action: 'SUBMIT'});
            // IMPORTANT: The 'token' that results from execute is an encrypted response sent by
            // reCAPTCHA to the end user's browser.
            // This token must be validated by creating an assessment.
            // See https://cloud.google.com/recaptcha/docs/create-assessment
        });
        }
    </script>
После отправки формы в консоли Нетворк перейти по ссылке сгенерированного хеша

$assetManager->addJs( "https://cdn.ampproject.org/v0.js");

<? $line = '';
                $files = scan_dir(__DIR__ . "/im/", [".", ".."]); // функция scan_dir в init.php
                foreach($files as $i=>$f){
                    $dir = $f;
                    $line .= '<a class="slider-doc" href="/clinic/diploma/im/'.$f.'"><img class="lazyload" data-src="/clinic/diploma/im/'.$f.'" style="width:200px; height:320px; object-fit:cover"/></a>';
                }
                echo $line;
                ?>

if (strlen($youtube_id) > 11) { // rutube
        $result = file_get_contents('https://rutube.ru/api/video/' . $youtube_id . '/thumbnail/');
        // Will dump a beauty json :3
        $preview_url = json_decode($result, true);
        $preview_url_url = $preview_url['url'];
        echo '<div class="youtube" itemscope itemtype="http://schema.org/VideoObject" data-src="https://rutube.ru/play/embed/' . $youtube_id . '" id="' . $youtube_id . '" style="background-image: url(//i.ytimg.com/vi/' . $youtube_id . '/0.jpg);">
        <meta itemprop="name" content="' . $name . '"/>
        <meta itemprop="description" content="' . $descr . '"/>
        <meta itemprop="duration" content="PT' . $t[0] . 'M' . $t[1] . 'S">
        <meta itemprop="isFamilyFriendly" content="true">
        <meta itemprop="uploadDate" content="' . date("Y-m-d H:i:s", filemtime(__FILE__)) . '"/>
        <span itemprop="thumbnail" itemscope itemtype="http://schema.org/ImageObject"> 
        <img itemprop="contentUrl" src="' . $preview_url_url . '" style="width:580px;height:324px;" alt="' . $name . '"/>
        <meta itemprop="thumbnailUrl" content="' . $preview_url_url . '">
        <meta itemprop="width" content="580">
        <meta itemprop="height" content="324">
        </span>
        <div class="play"><a itemprop="url" href="https://rutube.ru/play/embed/' . $youtube_id . '"></a></div></div>';
    }