asp 不重复数组数据的实现代码，比上个版本，更细，更能更强，大家可以根据需要选择。

函数代码如下：
<%'*******************************************************
'过滤数组重复函数名称：array_no(cxstr1,cxstr2,cxstr3)
'cxstr1：任意的字符串，自动识别
'cxstr2：cxstr1中分割符号。
'cxstr3：提取结果中的某一位置字串，等于0时返回为全部，大于数组下标时返回最后.
'使用于二维数组
'*******************************************************
function array_no(cxstr1,cxstr2,cxstr3)
if len(cxstr3) > 0 then
if not IsNumeric(cxstr3) then
array_no = "对不起，参数3类型必需为数字"
Exit Function
end if
else
array_no = "对不起，参数3类型必需为数字"
Exit Function
end if
if isarray(cxstr1) then
array_no = "对不起，参数1不能为数组"
Exit Function
end if
if cxstr1 = "" or isempty(cxstr1) then
array_no = "没有数据"
Exit Function
end if
ss = split(cxstr1,cxstr2)
cxs=cxstr2&ss(0)&cxstr2
sss=cxs
for m = 0 to ubound(ss)
cc = cxstr2&ss(m)&cxstr2
if instr(sss,cc)=0 then
sss = sss&ss(m)&cxstr2
end if
next
array_no = right(sss,len(sss)-len(cxstr2))
array_no = left(array_no,len(array_no)-len(cxstr2))
if cxstr3 <> 0 then
cx_sp = split(array_no,cxstr2)
if cxstr3 > ubound(cx_sp) then
array_no = cx_sp(ubound(cx_sp))
else
array_no = cx_sp(cxstr3)
end if
end if
end function%>

下面是测试代码如下：
<%s1 = "abc,aa,bb,cdef,bc,abcdef,hhgg,gggg,cde,edc"
s2 = "1,2,3,11,22,33,12,13,14,11,33,333,14"
s3 = ""
s4 = "sdf,abc,12,2,2,abc"
s5 = split(s4)
response.write "字串为字符时："&array_no(s1,",",0)&"<br>"
response.write "字串为数字时："&array_no(s2,",",0)&"<br>"
response.write "字串为空时："&array_no(s3,",",0)&"<br>"
response.write "字串为混合时："&array_no(s4,",",0)&"<br>"
response.write "字串为数组时："&array_no(s5,",",0)&"<br>"
response.write "字串为未知变量时："&array_no(s33,",",0)&"<br>"
response.write "提取某一位时，没有超过下标时："&array_no(s1,",",2)&"<br>"
response.write "提取某一位时，超过下标时："&array_no(s1,",",200)&"<br>"%>

测试结果：
字串为字符时：abc,aa,bb,cdef,bc,abcdef,hhgg,gggg,cde,edc
字串为数字时：1,2,3,11,22,33,12,13,14,333
字串为空时：没有数据
字串为混合时：sdf,abc,12,2
字串为数组时：对不起，参数1不能为数组
字串为未知变量时：没有数据
提取某一位时，没有超过下标时：bb
提取某一位时，超过下标时：edc

45IT.COM增强版本： 解决了数组常见错误
<%
'*******************************************************
'过滤数组重复函数名称：array_no(cxstr1,cxstr2,cxstr3)
'cxstr1：任意的字符串，自动识别
'cxstr2：cxstr1中分割符号。
'cxstr3：提取结果中的某一位置字串，等于0时返回为全部，大于数组下标时返回最后.
'使用于二维数组
'*******************************************************
function array_no(cxstr1,cxstr2,cxstr3)
if len(cxstr3) > 0 then
if not IsNumeric(cxstr3) then
array_no = "对不起，参数3类型必需为数字"
Exit Function
end if
else
array_no = "对不起，参数3类型必需为数字"
Exit Function
end if
if isarray(cxstr1) then
array_no = "对不起，参数1不能为数组"
Exit Function
end if
if cxstr1 = "" or isempty(cxstr1) then
array_no = "没有数据"
Exit Function
end if
do while instr(cxstr1,",,")>0
cxstr1=replace(cxstr1,",,",",")
loop
if right(cxstr1,1)="," then
cxstr1=left(cxstr1,len(cxstr1)-1)
end if
ss = split(cxstr1,cxstr2)
cxs=cxstr2&ss(0)&cxstr2
sss=cxs
for m = 0 to ubound(ss)
cc = cxstr2&ss(m)&cxstr2
if instr(sss,cc)=0 then
sss = sss&ss(m)&cxstr2
end if
next
array_no = right(sss,len(sss)-len(cxstr2))
array_no = left(array_no,len(array_no)-len(cxstr2))
if cxstr3 <> 0 then
cx_sp = split(array_no,cxstr2)
if cxstr3 > ubound(cx_sp) then
array_no = cx_sp(ubound(cx_sp))
else
array_no = cx_sp(cxstr3)
end if
end if
end function

s1 = "abc,aa,bb,cdef,bc,abcdef,hhgg,gggg,cde,edc,333,,,,,333,7,,,,"
s2 = "1,2,3,11,22,33,12,13,14,11,33,333,14,333,,,,,333,7,,,,"
s3 = ""
s4 = "sdf,abc,12,2,2,abc,333,,,,,333,7,,,,"
s5 = split(s4)
response.write "字串为字符时："&array_no(s1,",",0)&"<br>"
response.write "字串为数字时："&array_no(s2,",",0)&"<br>"
response.write "字串为空时："&array_no(s3,",",0)&"<br>"
response.write "字串为混合时："&array_no(s4,",",0)&"<br>"
response.write "字串为数组时："&array_no(s5,",",0)&"<br>"
response.write "字串为未知变量时："&array_no(s33,",",0)&"<br>"
response.write "提取某一位时，没有超过下标时："&array_no(s1,",",2)&"<br>"
response.write "提取某一位时，超过下标时："&array_no(s1,",",200)&"<br>"
%>

主要是增加了判断,代码如下:
do while instr(cxstr1,",,")>0
cxstr1=replace(cxstr1,",,",",")
loop
if right(cxstr1,1)="," then
cxstr1=left(cxstr1,len(cxstr1)-1)
end if