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run code in 150+ php & hhvm versions
Bugs & Features
<?php $a[-99] = 'bilk'; var_export($a);
Output for 4.3.0 - 5.2.13, 5.3.0 - 5.3.2, 5.3.4 - 7.1.0
array ( -99 => 'bilk', )
Output for 5.2.14 - 5.2.17, 5.3.3
array ( 18446744073709551517 => 'bilk', )