Changes to the Windows releases:
php_pdo_oci8.dll library (for use with Oracle version 8
     client libraries) is no longer being built. Instead, use
     php_pdo_oci.dll (note no '8') with Oracle 10 or 11
     client libraries. Connection to other database versions is still supported.
    
   php_oci8_11g.dll is available in addition to
     php_oci8.dll. Only one can be enabled at any time. Use
     php_oci8.dll with Oracle 10.2 client libraries. Use
     php_oci8_11g.dll with Oracle 11 or later client libraries.
     Connection to other database versions is still supported.
    
   Windows support has been added for the following functions:
Other changes:
PHP_WINDOWS_*. A list of these constants and their usage
     can be found at Predefined Constants.
    
   Support for the ISAPI module has been dropped. Use the improved FastCGI SAPI module instead.
Note: A new dedicated site for PHP on Windows is now available, including downloads, release candidates, and snapshots in various flavors (thread-safe/not-thread-safe, VC6/VC9, x86/x64). The URL of this site is » https://windows.php.net/.