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Implementation of datatypes in PHP

I wanted to know about Data Type implementation in PHP so I need a few resources(books websites and ...). what I want is not what data types PHP support or how to use them, it's the implementation and how all these things is done by PHP. I want to know how they are stored in memory and the very detail things about it(I already know PHP pretty good). That would be great if you could lead me where can I find this information.

Solution

  • Here is a couple of articles on data types in PHP from PHP Rocks and dummies. An interesting aside when it comes to data types in PHP is Type Hinting which will force a data type to be used for a function parameter.