ASP把网页中的电话号码生成图片的代码

作用：将页面中的电话号码生成图片格式。

<%
call com_creatvalidcode(request.querystring("tel"))

public sub com_creatvalidcode(ptel)

     ----------禁止缓存
     response.expires = 0
     response.addheader "pragma","no-cache"
     response.addheader "cache-ctrol","no-cache"
     response.contenttype = "image/bmp"

     randomize

     dim i, ii, iii ,rndcolor,strlen,sql,rs

     const codds = 5 ------------杂点出现的机率
     const str="0123456789-"
     strlen = len(ptel)
     rndcolor = chrb(cint(rnd*255)) & chrb(cint(rnd*255)) & chrb(cint(rnd*255))

     -----------颜色的数据(字符，背景)
     dim vcolordata(1)

     vcolordata(0) = chrb(0) & chrb(0) & chrb(0)     ----蓝0，绿0，红0（黑色）
     vcolordata(1) = chrb(255) & chrb(255) & chrb(255) ----蓝250，绿236，红211（浅蓝色）

     vcolordata(0) = chrb(197) & chrb(106) & chrb(49)     ---- 蓝0，绿0，红0（黑色）
     vcolordata(1) = chrb(238) & chrb(210) & chrb(193) -----蓝250，绿236，红211（浅蓝色）

     vcolordata(0) = chrb(0) & chrb(0) & chrb(0)     ---------蓝0，绿0，红0（黑色）
     vcolordata(1) = chrb(205) & chrb(237) & chrb(245) ------------蓝250，绿236，红211（浅蓝色）

     --------------------随机产生字符
     randomize

     dim vcode()
     redim vcode(strlen-1)
     for i = 0 to strlen-1
         vcode(i) =instr(1,str,mid(ptel,i+1,1),1)-1
     next

     -----------字符的数据
     dim vnumberdata(11)

     verdana font
     vnumberdata(0) = "11111111111000111101110111011101110111011101110111011101110111011110001111111111"
     vnumberdata(1) = "11111111111101111110011111110111111101111111011111110111111101111110001111111111"
     vnumberdata(2) = "11111111111000111101110111011101111110111111011111101111110111111100000111111111"
     vnumberdata(3) = "11111111111000111101110111111101111100111111110111111101110111011110001111111111"
     vnumberdata(4) = "11111111111110111111001111101011111010111101101111100001111110111111100111111111"
     vnumberdata(5) = "11111111110000011101111111011111110000111111110111111101110111011110001111111111"
     vnumberdata(6) = "11111111111000111101101111011111110000111101110111011101110111011110001111111111"
     vnumberdata(7) = "11111111110000011101101111111011111101111111011111110111111101111111011111111111"
     vnumberdata(8) = "11111111111000111101110111011101111000111101110111011101110111011110001111111111"
     vnumberdata(9) = "11111111111000111101110111011101110111011110000111111101111011011110000111111111"
     vnumberdata(10) = "11111111111111111111111111111111111111111100000111111111111111111111111111111111"
     vnumberdata(11) = "11111111111111111111111111111111111111111111111111111111111111111111111111111111"

     -----------------输出图像文件头 <br>
     response.binarywrite chrb(66) & chrb(77) &chrb(((strlen*8*10*3+54) mod 256)) & chrb(((strlen*8*10*3+54) 256)mod 256) & chrb((((strlen*8*10*3+54) 256)256)mod 256) & chrb(((((strlen*8*10*3+54) 256)256)256)mod 256) & 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(strlen*8) & chrb(0) & chrb(0) & chrb(0) & chrb(10) & chrb(0) &_
     chrb(0) & chrb(0) & chrb(1) & chrb(0)

     ------------------输出图像信息头
     response.binarywrite chrb(24) & chrb(0) & chrb(0) & chrb(0) & chrb(0) & chrb(0)&_
     chrb((strlen*8*10*3)mod 256)&chrb(((strlen*8*10*3)256)mod 256)&chrb((((strlen*8*10*3)256)256)mod 256)&chrb(((((strlen*8*10*3)256)256)256)mod 256)&_
     chrb(196) & chrb(14) & chrb(0) & chrb(0) & chrb(196) & chrb(14)&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     ----------历经所有行
         for ii = 0 to strlen-1     -------历经所有字
             for iii = 1 to 8 --------历经所有像素
                ---------逐行、逐字、逐像素地输出图像数据
                if rnd * 99 + 1 < codds then ---------随机生成杂点
                     response.binarywrite rndcolor
                else
                     response.binarywrite vcolordata(mid(vnumberdata(vcode(ii)), i * 8 + iii, 1))
                end if
             next
         next
     next
end sub
%>

将以上代码保存为img.，在要显示电话号码的位置插入<img src="img.asp?tel=0591-26728373">即可