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<?php $a = array('toto' => 0); var_dump($a); $b = array('toto' => $a['toto']); var_dump($b); ?>
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(1) { ["toto"]=> int(0) } array(1) { ["toto"]=> int(0) }