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<?php $a=array('foo'=>27, 'bar'=>array(3,2,7,1,9)); $b=$a['bar']; sort($b); print_r($b); print_r($a); ?>
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Array ( [0] => 1 [1] => 2 [2] => 3 [3] => 7 [4] => 9 ) Array ( [foo] => 27 [bar] => Array ( [0] => 3 [1] => 2 [2] => 7 [3] => 1 [4] => 9 ) )