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run code in 150+ php & hhvm versions
Bugs & Features
<?php $idx = 0; $intersection = array($idx++ => array()); var_dump($idx); print_r($intersection);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
int(1) Array ( [0] => Array ( ) )