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Producing a random and unique ID code for your users in PHP
If you want to give your users a specific code you will need to make sure that it really is random and unique. To accomplish this task PHP has a suitable function to offer, as it usually does: <?php $unique_id = uniqid("userid_"); echo $unique_id; ?> The key here of course is the function uniqid(). The value defined within it's brackets is a prefix, and can be either left empty or be changed to something more suitable. The result of the above code will be something along these lines: userid_4aa2cbece74cb And of course to take things one step further we can always call on the PHP function md5() to generate a completely random piece of code: <?php $unique_id = uniqid(); $unique_code = md5($unique_id); echo $unique_code; ?>
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