Deprecate autovivification on false

RFC Title	Deprecate autovivification on false
Change Type	Deprecation
Created on	2021-05-25
Last Updated on	2021-07-21
RFC Status	Implemented

RFC Vote: Deprecate autovivification on false

2021-06-092021-06-23

Implemented

Vote Period	2021-06-09 - 2021-06-23
Passing Threshold	>= 2/3
Vote Results	Yes: 34No: 2

PHP natively allows for autovivification (auto-creation of arrays from falsey values). This feature is very useful and used in a lot of PHP projects, especially if the variable is undefined. However, there is a little oddity that allows creating an array from a false and null value.

The proposal is to disallow autovivification from false values

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