I needed to generate roughly 50k unique serials. So I searched the web and found one solution, which I modified slightly and created to fit my needs. Its in PHP and will output a generated comma delimited CSV column1, column2 format (MS Excel will open that up for editing).

When I generated 50k serials, I used Office 2007’s Functions to remove duplicates (I didn’t code this into PHP as it was a waste of time for me due to the nature of what I needed the output for).

To give you an idea how many dupes I got it was about 1k dupes our of 50k serials, so not bad. One way to get around not having duplicates (if you use this for a web based serial number process) would be to combine the generated serial with say a database column that only takes unique serials, so if you have an existing serial, simply generate another and you shouldn’t have any problems).

Download the Code:
PHP Serial Generator

5 Comments to “PHP Serial Number Generator”

  1. Kangkam | November 28th, 2008 at 2:32 AM

    hello jakub,
    can you explain to me what is this line for ?

    $textout .= “1512”;

    thank you

  2. Jakub | January 25th, 2009 at 3:46 PM

    Kangkam, that $textout line is the “line terminator”. If you do a search on google you will get some results back on it.

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