Constants cannot be changed once it is declared. Class constants can be useful if you need to define some constant data within a class. A class constant is declared inside a class with the const ...

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PHP 8.3, a major update to the popular server-side web scripting language, offers features such as explicit typing of class constants, deep cloning of readonly properties, and additions to randomness ...

The method assumes that the first non-empty token before the constant name must be T_CONST for a constant to be a class constant, but this is not the case for typed class constants. The example above ...