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Library/Backend/PHP
Medium Pro#php

Typed class constants trong PHP 8.3 là gì và tại sao nên sử dụng chúng?

February 15, 2026

Quick summary

Typed class constants (introduced in PHP 8.3) allow explicit type declarations for constants in classes, interfaces, traits, and enums. This feature enables early compile-time type checking and enforces strict covariance during inheritance, ensuring compliance with the Liskov Substitution Principle (LSP).

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Sample answer:

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam.

Quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore.

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