Do Magic methods _ set () and _ get () must be declared as public? Solution

Do Magic methods _ set () and _ get () must be declared as public? Do Magic methods _ set () and _ get () must be declared as public? When my declaration is private, the browser prompts "to set _ set () and _ get () to public" outside the class ", however, many data books can be declared as priv magic methods _ set () and _ get (). must they be declared as public?
Do Magic methods _ set () and _ get () must be declared as public? When my declaration is private, the browser prompts "to set _ set () and _ get () to public" outside the class ", but many data books can be declared as private?

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Yes, it must be declared as public. only this is required for external access

Many data books can be declared as private.
Please delete these materials forever because he is lying to you!
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Discussion

Yes, it must be declared as public. only this is required for external access

Many data books can be declared as private.
Please delete these materials forever because he is lying to you!