Could I use something from the documentation on my homepage?

Hello.. I'm planning building a webpage with some articles and stuff, specially about php. I would just like to know, if I could use example 3-7 from the php documentation, to a guide, about installing php and apache 2 on linux. And also example 3-6 about installing it on apache. Can I? Tommy. P.S.: I hope this is the right email I'm sending this letter too, if not, please send me a mail with the correct email.