此编译选项可以防止任何人通过如 http://my.host/cgi-bin/php/secretdir/script.php 这样的 URL 直接调用 PHP。PHP 在此模式下只会解析已经通过了 web 服务器的重定向规则的 URL。
通常 Apache 中的重定向设置可以通过以下指令完成：
Action php-script /cgi-bin/php AddHandler php-script .php
此选项只在 Apache 下进行过测试，并且要依赖于 Apache 在重定向操作中所设置的非标准 CGI 环境变量 REDIRECT_STATUS。如果 web 服务器不支持任何方式能够判断请求是直接的还是重定向的，就不能使用这个选项，而应该用其它方法。请看下一节。
harvey dot eneman at oracle dot com (2009-06-30 16:29:32)
It appears that as of 5.3.0, --enable-force-cgi-redirect is not a valid configure option. A quick review of the 5.3.0 code indicates that it the logic previously enabled by specifying the --enable-force-cgi-redirect configure option is being built into php by default.
mega-squall at caramail dot com (2008-01-13 14:36:07)
Contrary to what was said, you can use arbitrary names for your MIME Type ...
However there's a restriction as it must be a valid MIME Type.
For instance, this is working perfectly :
AddHandler application/x-httpd-php4 .php4
AddHandler application/x-httpd-php5 .php5 .php
AddHandler application/x-httpd-php6 .php6
gelgin at internut dot com (2007-04-25 22:08:47)
solaris 9 php4.4.0
i have found you can't use arbitrary names ie.
AddType application/x-httpd-php .php
works
#AddHandler php4-script .php
won't do must be
AddHandler application/x-httpd-php
celtic at sairyx dot org (2006-12-14 17:24:56)
Note that force-redirect doesn't work with IIS at all; it'll tell you to go away, as IIS doesn't supply the right variables to PHP.
php.ini tells you to turn it off, so make sure you do.