License for Windows binaries

Hi all, Could anyone tell me the license of the binaries and source code placed here? http://pecl2.php.net/downloads/php-windows-builds/ I am developing a commercial package software using PHP and I will build libraries and PHP my own. Is it ok to use Visual Studio project files in these zip files (http://pecl2.php.net/downloads/php-windows-builds/source/) or these binaries (http://pecl2.php.net/downloads/php-windows-builds/php-libs/) for our commercial product and distribute our product with those binaries? Sincerely, ---- Yuichi Tanaka