$file = 'example.txt'; $content = 'Hello World!'; CFile::putContent($file, $content);
$file = 'example.txt'; $content = 'This is additional content'; CFile::putContent($file, $content, FILE_APPEND);This code appends the string "This is additional content" to the end of the file named "example.txt". Package Library: CFile is part of the Bitrix Framework, a content management system and web application framework developed by Bitrix, Inc. for building websites and e-commerce platforms. It is not a standalone package library but rather a component of the Bitrix Framework.