[Code Quality] BinaryComposer::MAGIC_BYTES is public but used only internally

[s2x]

Location

src/Phar/BinaryComposer.php:17

Problem

The MAGIC_BYTES constant is declared public but no code outside BinaryComposer references it. Exposing internal constants widens the public API by accident.

What to change

• Reduce the constant's visibility to private (or protected if subclasses are expected).
• If external consumers genuinely need it, document the use case and keep public.

Acceptance criteria

• MAGIC_BYTES is private (preferred) or protected, unless a documented external consumer exists.
• Existing tests pass (vendor/bin/phpunit).
• No behavioural change observable to users.