PHP开发 文件上传类型
你要的答案：
rar application/x-rar-compressed
zip application/zip
word application/msword
pdf application/pdf

更多参考：
文件后缀名  文件类型
　3gp video/3gpp
　　aab application/x-authoware-bin
　　aam application/x-authoware-map
　　aas application/x-authoware-seg
　　ai application/postscript
　　aif audio/x-aiff
　　aifc audio/x-aiff
　 aiff audio/x-aiff
　　als audio/X-Alpha5
　　amc application/x-mpeg
　　ani application/octet-stream
　　asc text/plain
　　asd application/astound
　　asf video/x-ms-asf
　　asn application/astound
　　asp application/x-asap
　　asx video/x-ms-asf
　　au audio/basic
　　avb application/octet-stream
　　avi video/x-msvideo
　　awb audio/amr-wb
　　bcpio application/x-bcpio
　　bin application/octet-stream
　　bld application/bld
　　bld2 application/bld2
　　bmp application/x-MS-bmp
　　bpk application/octet-stream
　　bz2 application/x-bzip2
　　cal image/x-cals
　　ccn application/x-cnc
　　cco application/x-cocoa
　　cdf application/x-netcdf
　　cgi magnus-internal/cgi
　　chat application/x-chat
　　class application/octet-stream
　　clp application/x-msclip
　　cmx application/x-cmx
　　co application/x-cult3d-object
　　cod image/cis-cod
　　cpio application/x-cpio
　　cpt application/mac-compactpro
　　crd application/x-mscardfile
　　csh application/x-csh
　　csm chemical/x-csml
　　csml chemical/x-csml
　　css text/css
　　cur application/octet-stream
　　dcm x-lml/x-evm
　　dcr application/x-director
　　dcx image/x-dcx
　　dhtml text/html
　　dir application/x-director
　　dll application/octet-stream
　　dmg application/octet-stream
　　dms application/octet-stream
　　doc application/msword
　　dot application/x-dot
　　dvi application/x-dvi
　　dwf drawing/x-dwf
　　dwg application/x-autocad
　　dxf application/x-autocad
　　dxr application/x-director
　　ebk application/x-expandedbook
　　emb chemical/x-embl-dl-nucleotide
　　embl chemical/x-embl-dl-nucleotide
　　eps application/postscript
　　eri image/x-eri
　　es audio/echospeech
　　esl audio/echospeech
　　etc application/x-earthtime
　　etx text/x-setext
　　evm x-lml/x-evm
　　evy application/x-envoy
　　exe application/octet-stream
　　fh4 image/x-freehand
　　fh5 image/x-freehand
　　fhc image/x-freehand
　　fif image/fif
　　fm application/x-maker
　　fpx image/x-fpx
　　fvi video/isivideo
　　gau chemical/x-gaussian-input
　　gca application/x-gca-compressed
　　gdb x-lml/x-gdb
　　gif image/gif
　　gps application/x-gps
　　gtar application/x-gtar
　　gz application/x-gzip
　　hdf application/x-hdf
　　hdm text/x-hdml
　　hdml text/x-hdml
　　hlp application/winhlp
　　hqx application/mac-binhex40
　　htm text/html
　　html text/html
　　hts text/html
　　ice x-conference/x-cooltalk
　　ico application/octet-stream
　　ief image/ief
　　ifm image/gif
　　ifs image/ifs
　　imy audio/melody
　　ins application/x-NET-Install
　　ips application/x-ipscript
　　ipx application/x-ipix
　　it audio/x-mod
　　itz audio/x-mod
　　ivr i-world/i-vrml
　　j2k image/j2k
　　jad text/vnd.sun.j2me.app-descriptor
　　jam application/x-jam
　　jar application/java-archive
　　jnlp application/x-java-jnlp-file
　　jpe image/jpeg
　　jpeg image/jpeg
　　jpg image/jpeg
　　jpz image/jpeg
　　js application/x-javascript
　　jwc application/jwc
　　kjx application/x-kjx
　　lak x-lml/x-lak
　　latex application/x-latex
　　lcc application/fastman
　　lcl application/x-digitalloca
　　lcr application/x-digitalloca
　　lgh application/lgh
　　lha application/octet-stream
　　lml x-lml/x-lml
　　lmlpack x-lml/x-l