In PHP5.3 all additional configure options (except --enable-cgi) are removed: --enable-fastcgi CGI: If this is enabled, the cgi module will be built with support for fastcgi also Now fastcgi is always enabled --disable-path-info-check CGI: If this is disabled, paths such as /info.php/test?a=b will fail to work Now it is enabled by default, but can be disabled with ini directive "cgi.fix_pathinfo=0" --enable-force-cgi-redirect CGI: Enable the security check for internal server redirects. You should use this if you are running the CGI version with Apache Now it is enabled by default, but can be disabled with ini directive "cgi.force_redirect=0" --enable-discard-path CGI: If this is enabled, the PHP CGI binary can safely be placed outside of the web tree and people will not be able to circumvent .htaccess security This option had effect only with --disable-path-info-check or "cgi.fix_pathinfo=0". Seems it needs only for CGI configuration that require each script start from "#! /usr/bin/php". Now it is disabled by default, but can be enabled with ini directive "cgi.discard_path=1".