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run code in 200+ php & hhvm versions
Bugs & Features
<?php define('some', 'thing'); define('some', 'thing');
Output for 4.3.0 - 4.3.6, 4.3.9 - 4.4.9, 5.0.1 - 7.2.0
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