Do you want the PHP or the phpBB download ?
Your thread title says you have PHP problems, but in the thread you ask for the phpbb files, so I'm assuming that you want phpBB (php Bulletin Board).
Can you confirm either way whether you want one, the other, or both ?
If you email me I'll certainly send them to you, but I strongly suspect that this is a problem with your PC and/or its software.
Can you confirm your operating system and which zip program you are using ?