sori... nak tanya sket

aku dah tgk byk soscode php ni... tapi takde satu pon yg crawl web pages to catch pdf & ps docs... stakat nih yg aku jumpa... cuma crawl web pages and catch html + gif files... dlm CFM... sume dia bleh amik... any extension files larr... tapi dlm php bleh ker??

pas tu...
kalau nak upload file guna php... bleh ker upload pdf + ps files... sbb ada error larr... tak bleh nak baca... apa yg perlu aku buat nie?