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<?php class Foo { private const C1 = "a"; private const C2 = 'b'; } try { var_dump(constant('Foo::C1')); } catch(Error $e) { echo 'Caught',$e->getMessage(), PHP_EOL; } try{ Foo::C2; } catch(Error $e) { echo 'Caught',$e->getMessage() ,PHP_EOL; }
Output for git.master, git.master_jit, rfc.property-hooks
CaughtCannot access private constant Foo::C1 CaughtCannot access private constant Foo::C2

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