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<?php class Foo { const BAR = [ 3 => ‘qux’, 4 => ‘bang’, 7 => ‘theta’, 9 => ‘epsilon’ ]; const BAZ = Foo::BAR[4]; } var_dump(Foo::BAZ);
Output for git.master, git.master_jit
Fatal error: Uncaught Error: Undefined constant "‘qux’" in /in/AZQBm:11 Stack trace: #0 {main} thrown in /in/AZQBm on line 11
Process exited with code 255.
Output for rfc.property-hooks
Fatal error: Uncaught Error: Undefined constant "‘qux’" in /in/AZQBm:5 Stack trace: #0 /in/AZQBm(14): [constant expression]() #1 {main} thrown in /in/AZQBm on line 5
Process exited with code 255.

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