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<?php $array = array( '0' => array(1), '2' => array(2), '1' => array(3)); print_r($array); $array = array_values($array); print_r($array);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Array ( [0] => Array ( [0] => 1 ) [2] => Array ( [0] => 2 ) [1] => Array ( [0] => 3 ) ) Array ( [0] => Array ( [0] => 1 ) [1] => Array ( [0] => 2 ) [2] => Array ( [0] => 3 ) )