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Duplicate entry question


coolbeansdude51

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Hello forum,

 

I have an application which deals with quotes.  They have to be short (140 characters or less) and so far I haven't been running into the problem of duplicates until now. 

 

I am wondering if anyone knows of a open source project or any other code out there that basically searches the a field in a database and compares it to this new entry and returns how alike it is based off a percentage.

 

For example:

 

Someone would want to submit a quote like "Business is fun." the script would then search the database and try to find other entries in the field that had the sames words.  It then returns how "unique" it is based off a percentage of the words that are in the quote and in the other quotes in the database.

 

Does that make sense?  Anyone have any ideas?

 

Thanks for your help!

 

-Adam

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