Cannot Static Static Property

Static can be used as a keyword to mark a property as ‘static’ (sic). It could also be used as a type for that same property, leading to those confusing lines below.

In fact, static would accept self, but also parent and any children class: just like self. So, self is sufficient to type properties, and there is no need for static static.

• Static properties (PHP manual)

• Late Static Binding (PHP manual)

• 5 usages of static keyword in PHP