Today, I have practiced with the multithread interface of PHP with the support of this POSIX pthreads extension. However, I cannot find a version for my development environment, which is built with VC++ 9.0 compiler in 64-bit system. Therefore, I have built this extension for myself and share it here for any one need it. I have tested and used this library successful in my environment.
You can download it here: https://www.mediafire.com/?r8f5t4agde8ikvd
After download this binary, extract in a new folder and copy files to your php binary folder as normal way. Remember to add extension=php_pthreads.dll to your php.ini file to load this library.