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Posted by Chris on 10/18/82 11:27
Jasper Bryant-Greene wrote:
> Chris wrote:
>
>> David Robley wrote:
>>
>>> Chris wrote:
>>>
>>>>
>>>> Pretty soon I'm going to be needing to generate a unique identifier
>>>> in a
>>>> script. I'm looking into how to go about doing it now.
>>>>
>>>
>>> Have you looked at uniqid() ? http://php.net/uniqid
>>>
>>>
>> If two requests generate and ID at the same microsecond then the ID
>> will duplicate, and that will not work for me.
>
>
> $unique_id = sha1( uniqid( mt_rand(), true ) );
>
> That unique ID will be based on the current time in microseconds
> prefixed by a random number generated by the Mersenne Twister. That is
> *extremely* unlikely to duplicate, even at the same microsecond.
>
Ok, thanks, That looks like it will work for me.
Any particular reason why you used sha1() in there?
Thanks alot,
Chris
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