mysql - Using php mt_rand() function -

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am trying use php mt_rand() function produce me unique number used unique identifier row in database. can pick number had picked range 1, 1000000. code follows echo mt_rand(1, 1000000);?> continued help

yes, produce duplicates. it's random, not unique. easiest solution use auto-increment column. if don't want sequential, have couple options. these 2 @ first:

https://github.com/ramsey/uuid

http://php.net/manual/en/function.uniqid.php


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