September 2017
Intermediate to advanced
244 pages
6h 44m
English
Content preview from Building RESTful Web Services with PHP 7
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Idempotent and non-idempotent methods
There are methods which achieve the same results no matter how many time we repeat the same operations. We consider GET, PUT, PATCH, and DELETE as idempotent methods, as no matter how many times we repeat these method calls, it will always result in the same thing. For example, if you are using GET example.com/books , it will always return the same list of books, no matter how many times you call this URL with the GET method. However, if user put something else in database then it can have different result in listing but to declare some method idempotent or not, we are not considering change in result because of external factors instead of that method call itself. In the same way, if you use PUT or
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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