Debian 要安裝什麼套件才能使用base64編碼

[kc19800322]

各位大大,小弟使用php(WAMP)寫一個emial程式,並且可以夾帶檔案,小弟在windows下測試都沒有問題,但安裝在Debian Linux,卻沒辦法夾到檔案,夾帶的檔案好像無法用base64去編碼,我收到的mail的內容全部是編碼的文字,請問各位大大,我是不是在Debian上少裝了什麼東西?請各位大大幫忙一下

mail 內容文字
MIME-Version: 1.0
Content-Type: multipart/mixed;
boundary="==Multipart_Boundary_xdb997aefa51be31e751a03005683b33cx"

This is a multi-part message in MIME format.

--==Multipart_Boundary_xdb997aefa51be31e751a03005683b33cx
Content-Type: text/plain; charset="Big5"
Content-Transfer-Encoding: 8bit



--==Multipart_Boundary_xdb997aefa51be31e751a03005683b33cx
Content-Type: application/msword;
name="網路報修專線.doc"
Content-Transfer-Encoding: base64

0M8R4KGxGuEAAAAAAAAAAAAAAAAAAAAAPgADAP7/CQAGAAAAAAAAAAAAAAABAAAAKgAAAAAAAAAA
EAAALAAAAAEAAAD+////AAAAACkAAAD/////////////////////////////////////////
EAAALAAAAAEAAAD+////
////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////

pcEAI2AJBAAA8FK/AAAAAAAAEAAAAAAABgAAGgkAAA4AYmpiam2lbaUAAAAAAAAAAAAAAAAAAAAA
AAAEBBYAMhAAAA/PAAAPzwAAjQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD//w8AAAAA
AAAAAAD//w8AAAAAAAAAAAD//w8AAAAAAAAAAAAAAAAAAAAAAKQAAAAAAHQDAAAAAAAAdAMAAHQD
AAAAAAAAdAMAAAAAAAB0AwAAAAAAAHQDAAAAAAAAdAMAABQAAAAAAAAAAAAAAIgDAAAAAAAAjAQA