Countless algorithms for encrypting data exist in computer science. One of the lesser known and less common encryptions is ROT13, a derivative of the Caesar cypher encryption technique.
In this tutorial, we’ll learn about ROT13 encryption and how it works. We’ll see how text (or strings) can be programmatically encoded in ROT13 using PHP. Finally, we’ll code a WordPress plugin that scans a post for blacklisted words and replaces any in ROT13 encryption.
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