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<?php interface IFace { const FOO = __CLASS__; } class ClassA implements IFace { // PHP Fatal error: Cannot inherit previously-inherited or override constant FOO from interface //const FOO = __CLASS__; } class ClassB extends ClassA { // works const FOO = __CLASS__; } echo ClassB::FOO;
Output for git.master, git.master_jit, rfc.property-hooks
ClassB

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