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Call Com_CreatValidCode("ValidCode")

Sub Com_CreatValidCode(pSN)

     'Author: Layen
     'QQ: 84815733
     'E-mail: support@ssaw.net

     ' 禁止緩存
     Response.Expires = -9999
     Response.AddHeader "Pragma","no-cache"
     Response.AddHeader "cache-ctrol","no-cache"
     Response.ContentType = "Image/BMP"

     Randomize

     Dim i, ii, iii

     Const cOdds = 8 ' 雜點出現(xiàn)的機(jī)率
     Const cAmount = 36 ' 文字?jǐn)?shù)量
     Const cCode = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"

     ' 顏色的數(shù)據(jù)(字符，背景)
     Dim vColorData(1)
     vColorData(0) = ChrB(0) & ChrB(0) & ChrB(0)  ' 藍(lán)0，綠0，紅0（黑色）
     vColorData(1) = ChrB(250) & ChrB(236) & ChrB(211) ' 藍(lán)250，綠236，紅211（淺藍(lán)色）

     ' 隨機(jī)產(chǎn)生字符
     Dim vCode(4), vCodes
     For i = 0 To 3
           vCode(i) = Int(Rnd * cAmount)
           vCodes = vCodes & Mid(cCode, vCode(i) + 1, 1)
     Next

     Session(pSN) = vCodes  '記錄入Session

     ' 字符的數(shù)據(jù)
     Dim vNumberData(35)
     vNumberData(0) = "1110000111110111101111011110111101001011110100101111
010010111101001011110111101111011110111110000111"
     vNumberData(1) = "1111011111110001111111110111111111011111111101111111
110111111111011111111101111111110111111100000111"
     vNumberData(2) = "1110000111110111101111011110111111111011111111011111
111011111111011111111011111111011110111100000011"
     vNumberData(3) = "1110000111110111101111011110111111110111111100111111
111101111111111011110111101111011110111110000111"
     vNumberData(4) = "1111101111111110111111110011111110101111110110111111
011011111100000011111110111111111011111111000011"
     vNumberData(5) = "1100000011110111111111011111111101000111110011101111
111110111111111011110111101111011110111110000111"
     vNumberData(6) = "1111000111111011101111011111111101111111110100011111
001110111101111011110111101111011110111110000111"
     vNumberData(7) = "1100000011110111011111011101111111101111111110111111
110111111111011111111101111111110111111111011111"
     vNumberData(8) = "1110000111110111101111011110111101111011111000011111
101101111101111011110111101111011110111110000111"
     vNumberData(9) = "1110001111110111011111011110111101111011110111001111
100010111111111011111111101111011101111110001111"
     vNumberData(10) = "1111011111111101111111101011111110101111111010111111
101011111100000111110111011111011101111000100011"
     vNumberData(11) = "1000000111110111101111011110111101110111110000111111
011101111101111011110111101111011110111000000111"
     vNumberData(12) = "1110000011110111101110111110111011111111101111111110
111111111011111111101111101111011101111110001111"
     vNumberData(13) = "10000011111101110111110111101111011110111101111011110
11110111101111011110111101111011101111000001111"
     vNumberData(14) = "10000001111101111011110110111111011011111100001111110
11011111101101111110111111111011110111000000111"
     vNumberData(15) = "10000001111101111011110110111111011011111100001111110
11011111101101111110111111111011111111000111111"
     vNumberData(16) = "11100001111101110111101111011110111111111011111111101
11111111011100011101111011111011101111110001111"
     vNumberData(17) = "10001000111101110111110111011111011101111100000111110
11101111101110111110111011111011101111000100011"
     vNumberData(18) = "11000001111111011111111101111111110111111111011111111
10111111111011111111101111111110111111100000111"
     vNumberData(19) = "11100000111111101111111110111111111011111111101111111
11011111111101111111110111110111011111000011111"
     vNumberData(20) = "10001000111101110111110110111111010111111100011111110
10111111101101111110110111111011101111000100011"
     vNumberData(21) = "10001111111101111111110111111111011111111101111111110
11111111101111111110111111111011110111000000011"
     vNumberData(22) = "10001000111100100111110010011111001001111101010111110
10101111101010111110101011111010101111001010011"
     vNumberData(23) = "10001000111100110111110011011111010101111101010111110
10101111101100111110110011111011001111000110111"
     vNumberData(24) = "11100011111101110111101111101110111110111011111011101
11110111011111011101111101111011101111110001111"
     vNumberData(25) = "10000001111101111011110111101111011110111100000111110
11111111101111111110111111111011111111000111111"
     vNumberData(26) = "11100011111101110111101111101110111110111011111011101
11110111011111011101001101111011001111110001011"
     vNumberData(27) = "10000011111101110111110111011111011101111100001111110
10111111101101111110110111111011101111000110011"
     vNumberData(28) = "11100000111101111011110111101111011111111110011111111
11001111111111011110111101111011110111100000111"
     vNumberData(29) = "10000000111011011011111101111111110111111111011111111
10111111111011111111101111111110111111110001111"
     vNumberData(30) = "10001000111101110111110111011111011101111101110111110
11101111101110111110111011111011101111110001111"
     vNumberData(31) = "10001000111101110111110111011111011101111110101111111
01011111110101111111010111111110111111111011111"
     vNumberData(32) = "10010100111101010111110101011111010101111101010111110
01001111110101111111010111111101011111110101111"
     vNumberData(33) = "10001000111101110111111010111111101011111111011111111
10111111110101111111010111111011101111000100011"
     vNumberData(34) = "10001000111101110111110111011111101011111110101111111
10111111111011111111101111111110111111110001111"
     vNumberData(35) = "11000000111101110111111111011111111011111111101111111
10111111111011111111011111111101110111100000011"

     ' 輸出圖像文件頭
     Response.BinaryWrite ChrB(66) & ChrB(77) & ChrB(230) & ChrB(4) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) &_
           ChrB(0) & ChrB(0) & ChrB(54) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(40) & ChrB(0) &_
           ChrB(0) & ChrB(0) & ChrB(40) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(10) & ChrB(0) &_
           ChrB(0) & ChrB(0) & ChrB(1) & ChrB(0)

     ' 輸出圖像信息頭
     Response.BinaryWrite ChrB(24) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(176) & ChrB(4) &_
           ChrB(0) & ChrB(0) & ChrB(18) & ChrB(11) & ChrB(0) & ChrB(0) & ChrB(18) & ChrB(11) &_
           ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) &_
           ChrB(0) & ChrB(0)

     For i = 9 To 0 Step -1  ' 歷經(jīng)所有行
           For ii = 0 To 3  ' 歷經(jīng)所有字
                 For iii = 1 To 10 ' 歷經(jīng)所有像素
                 ' 逐行、逐字、逐像素地輸出圖像數(shù)據(jù)
                       If Rnd * 99 + 1 < cOdds Then ' 隨機(jī)生成雜點
                             Response.BinaryWrite vColorData(0)
                       Else
                             Response.BinaryWrite vColorData(Mid(vNumberData(vCode(ii)), i * 10 + iii, 1))
                       End If
                 Next
           Next
     Next
End Sub

出處：藍(lán)色理想
責(zé)任編輯：moby

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