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POphp - generate non linear urls
 

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  1. POphp - generate non linear urls
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    <blockquote> <p><strong>Update:</strong></p> <p>Ok.. I have read a lot of solutions... Thank you so much everybody. I think I will keep it simple and avoid the encryption and just rely on two fields matching in the database. I can keep the id as it is (sequential) but add for example a timestamp (with : removed). Then I can put both through the youtube style url generator... leaving me with a really short, unique and not easily guessed url. e.g</p> <p>before the youtube url gen blah.com?id=10345&amp;s=134025</p> <p>after blah.com?id=H2s&amp;s=tL2s</p> <p>I log the unique views to each id anyway... so I will record unsucessful ones too and if a user hits 10 non matching url's in an hour then I can block his ip (I know a proxy will evade this...but it makes it more difficult). </p> <p>What do you think?</p> </blockquote> <p>This may sound like a bit of an odd question... what I am looking to achieve is a way to generate an id to be used in a url which can not be guessed or calculated. What I mean is it is not id=1, id=2...</p> <p>I was looking at a youtube style script <a href="https://stackoverflow.com/questions/1853471/php-help-improve-the-efficiency-of-this-youtube-style-url-generator">here</a>. Which has a padding option, but the padding is so obvious with urls like wTTTa and b666o. I considered MD5 ing the id... but thats hardly foolproof and makes for rather long urls.</p> <p>The solution must be url based (can't be cookie or session based) and before you panic and think that I am trying to work out a way to secure my admin page - i am not, its part of a game I am developing.</p>
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    1. COMaybe you should use a greater base than 16 (hexadecimal) like 64. That will decrease the length for MD5 values from 32 characters (4 bit/character) to only 22 characters (6 bit/character).
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