On Sat, 2009-02-14 at 07:41 +0800, LKSunny wrote:
> <?
> $a = array("a", "b", "c", "d");
>
> /*
> how to list:
> abcd
> abc
> ab
> ac
> ad
> bcd
> bc
> bd
> cd
> a
> b
> c
> d
>
> who have idea ? thank you very much !!
> */
> ?>
This looks like homework. Use recursion.
Cheers,
Rob.
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