This is a PHP based iPXE menu with submenus and with authentication and access restriction.
You can find iPXE at the official site of the project: http://ipxe.org/.
To use ipxe-phpmenu, uncomment these options before compiling iPXE:

//#define PARAM_CMD
//#define CONSOLE_VESAFB
//#define IMAGE_PNG
//#define CONSOLE_CMD

Set the 067 Bootfile Name option in the DHCP Server Options to the file boot.php, e.g. http://ixpe.domain.corp/boot.php. More information about configuring the DHCP Server Options can be found at http://ipxe.org/howto/msdhcp.

###Features of ipxe-phpmenu

• Authenication menu,
• iPXE main menu and its submenus are easily generated by PHP,
• Users see only those menu items that they have access to,
• Kickstart file installation of CentOS 6 with configurable network settings and hostname

###Users and access groups Users and access groups are set in the file config.php.