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<?php $test = array('key1'=>'value'); $test[] = array('key2' => $val, array('key3' => $val, 'key4' => $val)); var_dump($test);
Output for 5.0.4 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Notice: Undefined variable: val in /in/9SFTB on line 3 Notice: Undefined variable: val in /in/9SFTB on line 3 Notice: Undefined variable: val in /in/9SFTB on line 3 array(2) { ["key1"]=> string(5) "value" [0]=> array(2) { ["key2"]=> NULL [0]=> array(2) { ["key3"]=> NULL ["key4"]=> NULL } } }
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: val in /in/9SFTB on line 3 Notice: Undefined variable: val in /in/9SFTB on line 3 Notice: Undefined variable: val in /in/9SFTB on line 3 array(2) { ["key1"]=> string(5) "value" [0]=> array(2) { ["key2"]=> NULL [0]=> array(2) { ["key3"]=> NULL ["key4"]=> NULL } } }