Why might the "BeforeIndexHandler" handler not be called?

Question

1C-Bitrix

Why might the "BeforeIndexHandler" handler not be called? I take the handler declaration from the official site, the code (init.php) is as follows:

AddEventHandler("search", "BeforeIndex", "BeforeIndexHandler");
function BeforeIndexHandler($arFields) {
  echo("проверка");
}

Nothing is output. "AddMessage2Log()" also tried. If "echo" is taken out of the function, then the text written inside is output (that is, the "init.php" file is connected normally). I use the "search.title" component.

Answer 1

What should work here? Take the example and check on the news block
<?
// file /bitrix/php_interface/init.php
// register handler
AddEventHandler("search", "BeforeIndex", Array("MyClass", "BeforeIndexHandler"));
class MyClass
{
// create a "BeforeIndex" event handler
function BeforeIndexHandler($arFields)
{
if($arFields["MODULE_ID"] == "iblock" && $arFields["PARAM2"] == 33)
{
if(array_key_exists(" BODY", $arFields))
{
$arFields["BODY"] .= "latest news";
}
}
return $arFields;
}
}
?>