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<?php namespace bar; $a = FOO; // produces notice - undefined constants "FOO" assumed "FOO"; //$a = \FOO; // fatal error, undefined namespace constant FOO //$a = Bar\FOO; // fatal error, undefined namespace constant bar\Bar\FOO //$a = \Bar\FOO; // fatal error, undefined namespace constant Bar\FOO echo $a; ?>
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Undefined constant "bar\FOO" in /in/ahMRJ:3 Stack trace: #0 {main} thrown in /in/ahMRJ on line 3
Process exited with code 255.

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