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run code in 150+ php & hhvm versions
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<?php define('TRUE', false); echo true ? 'ye':'no';
Output for 4.3.0 - 5.6.28, 7.0.0 - 7.1.0
ye
Output for hhvm-3.12.0
Notice: Constant TRUE already defined in /in/PmZri on line 2 ye
Output for hhvm-3.10.0

Process exited with code 153.