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CodeIgniter 2 Cookbook by Rob Foster

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Using word_censor() for cleaning input

There may be times when you're building your application that you'll need to not only validate against unwanted data, but also check the content of that data for any unwanted words or phrases. For example, imagine that you're building a simple blogging engine and you don't want people replying to your blog posts with rude words and phrases—fair enough. So, what you need to do is to be able to look through the user input and filter out any unwanted content that might be present. CodeIgniter provides just this facility with the function word_censor(). Let's look at how to use it.

Getting ready

We're going to store our censored words in a database; so, we'll look for words that we'll use in place of actual rude ...

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