This site was useful when wanting to check some obfuscated PHP scripts. Pesky spammers have a habit of using base64_decode in dodgy php scripts to try and stop you from finding out what they are doing/executing.
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Online base64_decode() function – By Tools 4 Noobs. :-)
Entries from February 2010
Online base64_decode function
February 4th, 2010 · No Comments
Tags: Coding · Operating System