这是一个生成随机数的通用函数,我们首先将所有可能的字符保存在数组内,这里的例子是0-9及26个英文字符,共36个字符。注意数组下标是从0开始的,所以dim char_array(35),其实表示有36个字符。注意:本例没有专门区分字母的大小写,如果你还要加上“大小写敏感/区分大小写”特性的话,修改数组大小为char_array(50),然后在后面列出所有可能的小写字符。例如:
char_array(36) = 'a'
char_array(37) = 'b'
...............类推
注意这是一个可以通用的函数,gen_key(digits)它传进一个参数digits,代表要生成的随机密码位数。今后要生成20为密码就用gen_key(20)即可打印出密码,或者将它保存在数据库内。
函数代码:
<% response.Write("<br>")
Function gen_key(digits)
dim char_array(35) char_array(0) = "0" char_array(1) = "1" char_array(2) = "2" char_array(3) = "3" char_array(4) = "4" char_array(5) = "5" char_array(6) = "6" char_array(7) = "7" char_array(8) = "8" char_array(9) = "9" char_array(10) = "A" char_array(11) = "B" char_array(12) = "C" char_array(13) = "D" char_array(14) = "E" char_array(15) = "F" char_array(16) = "G" char_array(17) = "H" char_array(18) = "I" char_array(19) = "J" char_array(20) = "K" char_array(21) = "L" char_array(22) = "M" char_array(23) = "N" char_array(24) = "O" char_array(25) = "P" char_array(26) = "Q" char_array(27) = "R" char_array(28) = "S" char_array(29) = "T" char_array(30) = "U" char_array(31) = "V" char_array(32) = "W" char_array(33) = "X" char_array(34) = "Y" char_array(35) = "Z" randomize i = 1 do while i <= digits num = char_array(Int(35 * Rnd + 0)) output = output & num i = i + 1 loop gen_key = output
End Function
response.write "随机密码是:" & gen_key(6)
%>
(责任编辑:龙舞天翔) |