Robert Cummings wrote:
> 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.
Well, I don't know how you list them in that pattern, you need to write
an algorithm, but array_keys() will give keys for the array.
--
Thanks!
-Shawn
http://www.spidean.com
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