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run code in 200+ php & hhvm versions
Bugs & Features
<?php $test = array_keys([]) !== range(0, count([]) - 1); var_dump($test);
based on kR2fJ
Output for 5.6.30, hhvm-3.18.5 - 3.22.0, 7.0.30 - 7.3.0rc3
bool(true)