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lihaoquan
12,045 PointsCallbacks in PHP?
In the video, he talked about callback functions and anonymous functions, but I don't understand how callback functions and anonymous functions work, when to use them, and why?
1 Answer
Joe Cochran
18,249 PointsAnonymous functions are unnamed functions. They are often used in situations where you would like to pass a function to something.
Hampton discusses closures in the PHP Functions course Stage 2 - PHP Closures. It may also help to check out the PHP.net documentation on Anonymous Functions for the official definition and some examples of their use.
lihaoquan
12,045 PointsThank you, I'll definitely check them out!
Lestaf Santiago Pereira Pimentel
133 PointsLestaf Santiago Pereira Pimentel
133 PointsSorry for the late reply, but the previous answer only touched on Anonymous functions. Callback functions are functions that are called at the end of another function, one of their most obvious uses i can think of are in an express server with javascript, where there are functions that accepts another function as one of its arguments, say you want to format a GET request, so you define a function that does so and use it as a parameter in Express's GET function.