深思 PHP 数组遍历的差异（array_diff 的实现）经验

'产生不重复随机数

function rndarray(istart,iend,sum)

dim arrayid(),i,j,blnre,temp,iloop,eloop

redim arrayid(sum-1)

i=0

iloop=0

eloop=0

blnre=false

randomize

do while i<sum

temp=int(rnd*(iend-istart+1)+istart)

if i=0 then

arrayid(0)=temp

i=i+1

iloop=iloop+1

else

for j=0 to i-1

if arrayid(j)=temp then

blnre=true

iloop=iloop+1

exit for'这一句很重要，防止多余的循环

else

iloop=iloop+1

end if

next

 if blnre=false then

 arrayid(i)=temp

 i=i+1

 else

 blnre=false

 end if

end if

eloop=eloop+iloop

iloop=0

lohxQMvEkSop

rndarray=join(arrayid)&"循环次数:"&eloop

end function

response.write rndarray(1,10,5)&"<br>"'调用过程

function rndstr(istart,iend,isum)

dim i,j,vntarray()

redim vntarray(www.devze.comiend-istart)

j=istart

for i=0 to iend-istart

vntarray(i)=j

j=j+1

next

dim vntarray2(),temp,x,y

redim vntarray2(isum-1)

y=iend-istart+1

x=0

temp=vntarrayhxQMvEkS

do while x<isum

dim a

randomize

vntarray2(x)=temp(int(rnd*y))

a=" "&vntarra编程y2(x)&" "

temp=split(trim(replace(chr(32)&join(temp)&chr(32),a," ")))

x=x+1

y=y-1

loop

rndstr=join(vntarray2)

end function

response.write rndstr(1,5,2)

phone＝left(temp,6)&"***"&right(temp,2)