Re: [PHP-DEV] [RFC - discussion] __toArray()

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February 4, 2020 13:47 stevenwadejr@gmail.com (Steven Wade)
>> 3. The weak point of this proposal is the by reference handling for sort et al. Counterpoint: if you pass a variable to preg_match, then matches gets converted from anything to array, so i believe by reference casting should change the original value (https://3v4l.org/XUJ5m <https://3v4l.org/XUJ5m>). This is weird, but consistent. > > The proposal states that “array functions that operate on an array by reference such as sort or shuffle will not work on an object implementing __toArray() under this proposal”, and IMO that is consistent with other magical casting behaviors and I wouldn’t expect a class implementing __toArray() to be able to be written or referenced like a traditional array. > > Passing an object with toString by reference will change the original variable: https://3v4l.org/77lov <https://3v4l.org/77lov> Ah, I think I see what you mean. PHP’s making a copy of the string variable once it’s cast, so it’s no longer referencing the original object that implemented the __toString() method. I imagined the __toArray() would function the same. Once the cast is called on the object, it’s a new array variable and can be acted upon as such. What I was trying to get at was that the magic method does not give the ability to write to the original object. If that’s not clear then I need to update the RFC.