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<?php $ary = array(); $ary['foo'] = 'bar'; function my_func(&$ary) { $ary['bar'] = 'foo'; } my_func($ary); var_dump($ary);
Output for 4.3.0 - 7.2.0
array(2) { ["foo"]=> string(3) "bar" ["bar"]=> string(3) "foo" }