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08.11.2008 at 10:34PM PDT, ID: 23640203
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7.8

Using rand() to generate random 6 digit numbers.  Is there a better way...???

Asked by angelleye in PHP Scripting Language

Tags:

I need to generate unique ticket numbers for an online raffle that could have around 100k tickets or so generated.  I've currently got this part setup very simple:

$RandomNumber = rand(100000, 999999);

Which of course is generating a random number between 100,000 and 999,999.  This is simply because my client requested a 6 digit ticket ID for all tickets.  

I'm a little worried about the small possibility of a number getting assigned to 2 separate tickets.  Is there way I can randomly generate all 6 digits rather than randomly grabbing a 6 digit number from this range?  I think that would give me more of a guarantee that I won't ever get the same value twice.  

Am I worrying too much?  Any information would be greatly appreciated.  Thanks!Start Free Trial
[+][-]08.11.2008 at 10:40PM PDT, ID: 22210311

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[+][-]08.11.2008 at 10:40PM PDT, ID: 22210314

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[+][-]08.11.2008 at 10:52PM PDT, ID: 22210339

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[+][-]08.11.2008 at 10:55PM PDT, ID: 22210347

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[+][-]08.11.2008 at 11:05PM PDT, ID: 22210369

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[+][-]08.12.2008 at 12:42AM PDT, ID: 22210761

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About this solution

Zone: PHP Scripting Language
Tags: PHP
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Solution Provided By: ravenpl
Participating Experts: 3
Solution Grade: A
 
 
 
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