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<?php define('some', 'thing'); define('some', 'thing');
Output for 4.3.0 - 4.3.6, 4.3.9 - 4.4.9, 5.0.1 - 5.6.21, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Notice: Constant some already defined in /in/472o7 on line 4
Output for 4.3.7 - 4.3.8, 5.0.0
Notice: Constant already defined in /in/472o7 on line 4