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<?php class A { private const ASD = 'asd'; public function handle() { return self::ASD . PHP_EOL; } } class B extends A {} $a = new A; $b = new B; echo $a->handle(); echo $b->handle(); class AA { private const ASD = 'asd'; public function handle() { return static::ASD . PHP_EOL; } } class BB extends AA {} $a = new AA; $b = new BB; echo $a->handle(); echo $b->handle();
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
asd asd asd Fatal error: Uncaught Error: Undefined constant BB::ASD in /in/l0c8r:26 Stack trace: #0 /in/l0c8r(37): AA->handle() #1 {main} thrown in /in/l0c8r on line 26
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
asd asd asd Fatal error: Uncaught Error: Undefined class constant 'ASD' in /in/l0c8r:26 Stack trace: #0 /in/l0c8r(37): AA->handle() #1 {main} thrown in /in/l0c8r on line 26
Process exited with code 255.
Output for 7.0.0 - 7.0.20
Parse error: syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /in/l0c8r on line 4
Process exited with code 255.

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