What does "final" mean in PHP? [closed]

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final static public function registerAutoload(){}

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It effectively means that sub-classes cannot override this method, or as the PHP final keyword documentation states:

"...prevents child classes from overriding a method by prefixing the definition with final. If the class itself is being defined final then it cannot be extended."

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It means a child class cannot override the method registerAutoload.

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The same as in every other language: any class that extends another containing a final method cannot override that specific method.