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<?php abstract class A { protected const c = null; abstract protected static function fs(); abstract protected function f(); } class B extends A { public function __construct(C $c) { var_dump(C::fs()); var_dump($c->f()); var_dump(C::C); } protected static function fs() {} protected function f() {} } class C extends A { protected const C = 'C::C'; protected static function fs() { return __METHOD__; } protected function f() { return __METHOD__; } } new B(new C);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
string(5) "C::fs" string(4) "C::f" Fatal error: Uncaught Error: Cannot access protected constant C::C in /in/2lU3i:15 Stack trace: #0 /in/2lU3i(33): B->__construct(Object(C)) #1 {main} thrown in /in/2lU3i on line 15
Process exited with code 255.
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
string(5) "C::fs" string(4) "C::f" Fatal error: Uncaught Error: Cannot access protected const C::C in /in/2lU3i:15 Stack trace: #0 /in/2lU3i(33): B->__construct(Object(C)) #1 {main} thrown in /in/2lU3i on line 15
Process exited with code 255.
Output for 7.0.0 - 7.0.25
Parse error: syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /in/2lU3i on line 4
Process exited with code 255.
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