WAMP 2.5 install SAPRFC

Apache Version : 2.4.9
PHP Version : 5.5.12
Apache/2.4.9 (Win32)

1) Extract zip file saprfc-$VERSION$-$PHP_VERSION$.zip

2) Copy php_saprfc_PHP5.5_x86_ts.dll to your extensions directory (e.g. D:\wamp\bin\php\php5.5.12\)

3) Edit php.ini file (in windows system dircetory, e.g. D:\wamp\bin\apache\apache2.4.9\bin\) and add line: 'extension=php_saprfc_PHP5.5_x86_ts.dll'

4) Copy librfc32.dll (from SAPGUI install CD) to the windows system
     directory or simple install SAPGUI on your machine.