No, but try looking in OpenACS for
ns_register_filter
examples:
$ cd packages
$ find . -name "*.tcl" -print | xargs grep ns_register_filter
./acs-tcl/tcl/request-processor-init.tcl: ns_register_filter preauth $method /resources/* rp_resources_filter
./acs-tcl/tcl/request-processor-init.tcl: ns_register_filter preauth $method * rp_filter
./acs-tcl/tcl/request-processor-init.tcl: ns_register_filter $kind $method $path rp_invoke_filter \
./acs-bootstrap-installer/bootstrap.tcl: ns_register_filter preauth GET * bootstrap_write_error
./acs-bootstrap-installer/bootstrap.tcl: ns_register_filter preauth POST * bootstrap_write_error
./acs-bootstrap-installer/bootstrap.tcl: ns_register_filter preauth HEAD * bootstrap_write_error
What you'll want is something like:
ns_register_filter preauth * {/my-php-pages/*.php} my_security_filter_proc
Your my_security_filter_proc
will need to handle the
security check, then redirect to the login page while passing the
appropriate info so that after logging in, the login page will
redirect the user back to where he wanted to go.