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<?php $a = array( null => 'A', TRUE => 'B', FALSE => 'C', true => 'D', '' => 'E', ); print_r($a); count($a);
Output for 4.3.2 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Array ( [] => E [1] => D [0] => C )
Output for 4.3.0 - 4.3.1
Array ( [] => E )