use Bitrix\Highloadblock as HL;
use Bitrix\Main\Entity;
use Bitrix\Main;

include_once($_SERVER["DOCUMENT_ROOT"]."/bitrix/php_interface/include/hlclass.php");
include_once($_SERVER["DOCUMENT_ROOT"]."/bitrix/php_interface/include/userfield/htmltype.php");
include_once($_SERVER["DOCUMENT_ROOT"]."/bitrix/php_interface/include/constant.php");

if (file_exists($_SERVER["DOCUMENT_ROOT"]."/bitrix/php_interface/include/agents.php"))
    require_once($_SERVER["DOCUMENT_ROOT"]."/bitrix/php_interface/include/agents.php");
include_once($_SERVER["DOCUMENT_ROOT"]."/bitrix/php_interface/include/event.php");

CModule::IncludeModule('highloadblock');
function get_hl_block_class_by_table_name($name)
{
	$hl_class=false;
	$rsData = HL\HighloadBlockTable::getList(array('filter'=>array('TABLE_NAME'=>$name)));
	if ($HLData = $rsData->fetch())
	{
		$hl_class=array();
		$entity = HL\HighloadBlockTable::compileEntity($HLData);
		$hl_class['class'] = $entity->getDataClass();     
		$hl_class['table_name'] = $name;  
		$hl_class['ID'] = $HLData['ID']; 
	}
	return $hl_class;
}

define('SECTION_ID_LABEL_NEW','930');
define('SECTION_ID_LABEL_SALE','847');
define('PRICE_TEXT', 
[
'12' => 'T.',
'13' => 'E.',
'14'=>'P.',
]
	  );/*
define("RE_SITE_KEY","6Lcl20kqAAAAAEFf9JXnvNHmt1bw0iVHLUwJ9Q47");
define("RE_SEC_KEY","6Lcl20kqAAAAALPcGo42QYa5Qy6hi8p_1xQeUh7P");
*/
define("RE_SITE_KEY","6LdLWaIqAAAAALc9O56qwCe4HlcPh2omSELsdq8o");
define("RE_SEC_KEY", "6LdLWaIqAAAAAETqCfnpWRL7HorMfm8upFXgA");
function num2word($num, $words)
{
	$num = $num % 100;
	if ($num > 19) $num = $num % 10;
	switch ($num) 
	{
		case 1: {return($words[0]);}
		case 2: case 3: case 4: {return($words[1]);}
		default: {return($words[2]);}
	}
}


global $language_revolution;
$language_revolution=LANGUAGE_ID=='en'?'EN':'';
AddEventHandler("main", "OnAfterUserAdd", "OnAfterUserAddHandler");

function OnAfterUserAddHandler(&$arFields)
{

   $errors = Array();

   if($arFields["ID"]>0 && $arFields["UF_SUBSCRIBE"])
   {

      if(CModule::IncludeModule("subscribe")) {
      
         $USER_ID = $arFields["ID"];
         $EMAIL = $arFields["EMAIL"];
      
         $arFilter = array(
            "ACTIVE" => "Y",
            "LID" => "s1",
            "VISIBLE"=>"Y",
         );
      
         $rsRubrics = CRubric::GetList(array(), $arFilter);
         $arRubrics = array();
         while($arRubric = $rsRubrics->GetNext()) $arRubrics[] = $arRubric["ID"];
      
         $obSubscription = new CSubscription;
      
         $rsSubscription = $obSubscription->GetList(array(), array("USER_ID" => $USER_ID));
         $arSubscription = $rsSubscription->Fetch();
   
         if(is_array($arSubscription))
         {
            $rs = $obSubscription->Update(
               $arSubscription["ID"],
               array(
                  "FORMAT" => "html",
                  "RUB_ID" => $arRubrics,
               ),
               false
            );
         }
         else
         {
            $ID = $obSubscription->Add(array(
               "USER_ID" => $USER_ID,
               "ACTIVE" => "Y",
               "EMAIL" => $EMAIL,
               "FORMAT" => "html",
               "CONFIRMED" => "Y",
               "SEND_CONFIRM" => "N",
               "RUB_ID" => $arRubrics,
            ));
         }
      
      }
      
   }
   

}

global $APPLICATION;
$eventManager = \Bitrix\Main\EventManager::getInstance();

$eventManager->addEventHandlerCompatible("main", "OnEndBufferContent", "ChangeContent");

function ChangeContent(&$content)
{
    global $USER, $APPLICATION;
    $request = \Bitrix\Main\Application::getInstance()->getContext()->getRequest();
    $isAdmin = $GLOBALS["USER"]->IsAdmin();

	if (strpos($request->getRequestUri(), "/bitrix") === false && !$request->isAjaxRequest() /*&& !$isAdmin*/) {
        $arBackParametrs = ["DELETE_SPACES" => "Y", "IMG_WEBP" => "Y"];

        //IMG_LAZYLOAD//
        $GLOBALS["IMG_LAZYLOAD"] = false;
        //IMG_WEBP//
        $webpSupport = strpos($_SERVER["HTTP_ACCEPT"], "image/webp") !== false || strpos(
            $_SERVER["HTTP_USER_AGENT"],
            " Chrome/"
        ) !== false ? true : false;
        $GLOBALS["IMG_WEBP"] = $arBackParametrs["IMG_WEBP"] == "Y" 
&& function_exists("imagewebp") 
&& !CSite::inDir(SITE_DIR . "personal/");

        if ($GLOBALS["IMG_LAZYLOAD"] || $GLOBALS["IMG_WEBP"]) {
            if ($GLOBALS["IMG_WEBP"]) {
                $content = preg_replace("/<body([^>]*)>/", "<body$1 data-img-webp=\"true\">", $content);
            }

            $content = preg_replace_callback("/<img[^>]+src=\"([^\"]+)\"/is", function ($matches) {
                if ($GLOBALS["IMG_LAZYLOAD"]) {
                    $matches[0] = str_replace(" src=", " src='/load.svg' data-lazyload-src=", $matches[0]);
                }

                if ($GLOBALS["IMG_WEBP"]) {
                    if (substr($matches[1], 0, 4) != "http" && substr($matches[1], 0, 2) != "//" && substr(
                            $matches[1],
                            0,
                            11
                        ) != "data:image/") {
                        $pathinfo = pathinfo($matches[1]);
                        if (in_array($pathinfo["extension"], array("jpg", "jpeg", "png"))) {
                            $newFile = $_SERVER["DOCUMENT_ROOT"] . $pathinfo["dirname"] . "/" . $pathinfo["filename"] . ".webp";
                            if (file_exists($newFile)) {
                                $newSrc = $pathinfo["dirname"] . "/" . $pathinfo["filename"] . ".webp?" . filemtime(
                                        $newFile
                                    );
                                $matches[0] = str_replace($matches[1], $newSrc, $matches[0]);
                            } else {
                                if (convertImgToWebp($matches[1])) {
                                    $newSrc = $pathinfo["dirname"] . "/" . $pathinfo["filename"] . ".webp?" . filemtime(
                                            $newFile
                                        );
                                    $matches[0] = str_replace($matches[1], $newSrc, $matches[0]);
                                }
                            }
                            unset($newSrc, $newFile);
                        }
                        unset($pathinfo);
                    }
                }

                return $matches[0];
            },                               $content);


            $content = preg_replace_callback("/background-image:url\(([^\"]+)\)/is", function ($matches) {
                if ($GLOBALS["IMG_WEBP"]) {
                    if (substr($matches[1], 0, 4) != "http" && substr($matches[1], 0, 2) != "//" && substr(
                            $matches[1],
                            0,
                            11
                        ) != "data:image/") {
                        $pathinfo = pathinfo($matches[1]);
                        if (in_array($pathinfo["extension"], array("jpg", "jpeg", "png"))) {
                            $newFile = $_SERVER["DOCUMENT_ROOT"] . $pathinfo["dirname"] . "/" . $pathinfo["filename"] . ".webp";
                            if (file_exists($newFile)) {
                                $newSrc = $pathinfo["dirname"] . "/" . $pathinfo["filename"] . ".webp?" . filemtime(
                                        $newFile
                                    );
                                $matches[0] = str_replace($matches[1], $newSrc, $matches[0]);
                            } else {
                                if (convertImgToWebp($matches[1])) {
                                    $newSrc = $pathinfo["dirname"] . "/" . $pathinfo["filename"] . ".webp?" . filemtime(
                                            $newFile
                                        );
                                    $matches[0] = str_replace($matches[1], $newSrc, $matches[0]);
                                }
                            }
                            unset($newSrc, $newFile);
                        }
                        unset($pathinfo);
                    }
                }
                return $matches[0];
            },                               $content);
        }
    }
}

function convertImgToWebp($src)
{
return false;
$pathinfo = pathinfo($src);

    if (!in_array($pathinfo["extension"], array("jpg", "jpeg", "png"))) {
        return false;
    }

    $newFile = $_SERVER["DOCUMENT_ROOT"] . $pathinfo["dirname"] . "/" . $pathinfo["filename"] . ".webp";
    if (file_exists($newFile)) {
        return false;
    }

    $sourceFile = $_SERVER["DOCUMENT_ROOT"] . $src;
    $sourceFileSize = getimagesize($sourceFile);

    switch ($sourceFileSize["mime"]) {
        case "image/jpeg":
            $im = imagecreatefromjpeg($sourceFile);
            break;
        case "image/png":
            $pngimg = imagecreatefrompng($sourceFile);
            $w = imagesx($pngimg);
            $h = imagesy($pngimg);
            $im = imagecreatetruecolor($w, $h);
            imageAlphaBlending($im, false);
            imageSaveAlpha($im, true);
            $trans = imagecolorallocatealpha($im, 0, 0, 0, 127);
            imagefilledrectangle($im, 0, 0, $w - 1, $h - 1, $trans);
            imagecopy($im, $pngimg, 0, 0, 0, 0, $w, $h);
            break;
    }

	// $imagewebp = imagewebp($im, $newFile, 75);

	//imagedestroy($im);

    return $imagewebp ? true : false;
}



$eventManager->addEventHandler(
    'main',
    'OnUserTypeBuildList',
    [
        '\IT23\UserField\HtmlType',
        'getUserTypeDescription'
    ]
);

<pre>[RuntimeException] 
Could not start session because headers have already been sent. &quot;/home/bitrix/www/local/php_interface/init.php&quot;:18. (0)
/home/bitrix/www/bitrix/modules/main/lib/session/session.php:143
#0: Bitrix\Main\Session\Session-&gt;start()
	/home/bitrix/www/bitrix/modules/main/lib/session/kernelsessionproxy.php:47
#1: Bitrix\Main\Session\KernelSessionProxy-&gt;start()
	/home/bitrix/www/bitrix/modules/main/include.php:182
#2: require_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog_before.php:19
#3: require_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog.php:10
#4: require_once(string)
	/home/bitrix/www/bitrix/header.php:1
#5: require(string)
	/home/bitrix/www/catalog/index.php:2
#6: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:128
#7: include_once(string)
	/home/bitrix/www/bitrix/urlrewrite.php:2
----------
</pre>