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<?php $a = array("a" => "apple", "b" => "banana"); $a += array("a" => "pear", "b" => "strawberry", "c" => "cherry"); var_dump($a);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(3) { ["a"]=> string(5) "apple" ["b"]=> string(6) "banana" ["c"]=> string(6) "cherry" }