<?php
class Foo {
const A = 'Foo::A';
const B = self::A . ' and ' . self::C;
const C = 'Foo::C';
}
class Bar extends Foo {
const A = 'Bar::A';
const C = 'Bar::C';
}
var_dump(Bar::B);
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
string(17) "Foo::A and Foo::C"