PHP4.3 with Dav and Apache2

Hello. Here is the question: I have apache 2 and php4.3 installed as cgi script (not an apache2 module), so, in apache2 config i've create a webDir, it normally works from IE, so, then a've load apache2 mod_dav and it starts working too (from Network Places i can add this folder). Now, the question itself, how i can add control of this folder to PHP ? i mean, it is possible to emulate WebDAV protocol using php ? So it will be as dynamic content of the folder not an actual dav directory. In other words, i need to pass dav requests from apache to php? Give me some idea how i can do thah ? Big thanks. Sorry for my english, just teaching...