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Thread: Text in images?

  1. #1
    Regular Coder
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    Text in images?

    Hi all, ive never really looked into it but was wondering if someone could give a brief explanation as to how certain images come to generate random numebrs/chars for confirmation numbers ect to stop bots signing up.

    would also like to know how you would check against it.

    thanks

  • #2
    Senior Coder gsnedders's Avatar
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    It's done by a server side script, often PHP with GD support, read the PHP Manual for more info...


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