ASP 过滤数组重复数据函数(加强版)

函数代码：

<%'******************************************************* 
'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：

<%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

三水点靠木增强版本： 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

do while instr(cxstr1,",,")>0 
cxstr1=replace(cxstr1,",,",",") 
loop 
if right(cxstr1,1)="," then 
cxstr1=left(cxstr1,len(cxstr1)-1) 
end if