AbstractArrayDeclarationSniff: improve the property reset#477
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Unsetting a property leaves a property in a different PHP internal state then (re)setting it to an empty value. Most notably, an unset property triggers the magic `__set()`/`__get()` etc methods if available, and while this abstract doesn't declare those methods, a sniff implementing the abstract _may_. This change maintains the target behaviour (resetting the property values to save memory), while preventing side-effects from using `unset()` on these properties.
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Unsetting a property leaves a property in a different PHP internal state then (re)setting it to an empty value.
Most notably, an unset property triggers the magic
__set()/__get()etc methods if available, and while this abstract doesn't declare those methods, a sniff implementing the abstract may.This change maintains the target behaviour (resetting the property values to save memory), while preventing side-effects from using
unset()on these properties.