Hayley's code, for example, is doing EXACTLY what you should expect it should.(Using = 5.3)First principle: A pointer stores a memory address to access an object. WHAT is being copied and passed, however, is the pointer.
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This functionality exists both in the same scope and when an argument is passed to a function.
Often the passed argument is called a "reference," due to certain distinctions between "passing by value" and "passing by reference" that were clearer in C and C .
Any time an object is assigned, a pointer is generated. When using the "-", you will of course be accessing the same internals as the original variable in the caller function.
(I haven't delved TOO deeply into the Zend engine yet, but as far as I can see, this applies)2nd principle, and source of the most confusion: Passing a variable to a function is done by default as a value pass, ie, you are working with a copy. " A common misconception both here and in the Java world. Just using "=" will only play with copies.3rd principle:"&" automatically and permanently sets another variable name/pointer to the same memory address as something else until you decouple them. Think of it as joining two pointers at the hip until forcibly separated with "unset()".