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<Practical uses for reflection ⁄ >




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You may have heard about the reflection feature in PHP. Simply put, it's a way to get a list of methods in a class, a methods parameters, or other "internal" things like that. But how is this actually useful for any common task in application development?

A usage scenario

Most web applications use forms. Forms often represent some model, such as a newspost. If the model is simple, writing the form in HTML is not too bad, or we might be able to use a scaffolding feature in our framework.

But what if the model has lots of data in it, and we are just writing some small application, which doesn't necessarily require a big framework with features for form generation?

Here's a good use for reflection! Since in models we often have a naming scheme for the data the users would be able to input, we can utilize this knowledge with reflection to generate a list of possible fields in the model, and then generate the form with less typing required from us.



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http://codeutopia.net/blog/2009/02/16/practical-uses-for-reflection/




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