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<?php $a = array('abc' => 'ABC', 'xyz' => 'XYZ'); $b = array('none' => 'Please select…'); var_dump($a, $b); var_dump($a + $b, $b + $a);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.30, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(2) { ["abc"]=> string(3) "ABC" ["xyz"]=> string(3) "XYZ" } array(1) { ["none"]=> string(16) "Please select…" } array(3) { ["abc"]=> string(3) "ABC" ["xyz"]=> string(3) "XYZ" ["none"]=> string(16) "Please select…" } array(3) { ["none"]=> string(16) "Please select…" ["abc"]=> string(3) "ABC" ["xyz"]=> string(3) "XYZ" }

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