Download of saprfc-1.4.1-4.4.8.Win32.zip (saprfc-1.4.1-4.4.8.Win32.zip ( external link: SF.net): 80,303 bytes) will begin shortly. If not so, click link on the left.
SAPRFC is the extension module for PHP4 and PHP5 that allow call ABAP functions in an SAP R/3 system from PHP scripts. On other side it's also possible write RFC server program in PHP and call PHP functions from ABAP.