The contents of this directory originate from the PHP 8.1.11 development package SDK with key headers patched for ACE compatbility. https://windows.php.net/downloads/releases/php-devel-pack-8.1.17-nts-Win32-vs16-x64.zip sha256: e6211c41df519f54be6488e0d71edac67d8ce7b1340dcb9ccf84bae54e955e0a Refer to CHANGES.TXT for details on what was patched