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<?php $foo = ['one' => 1, 'two' => 2]; $bar = ['one' => 101, 'two' => 201]; $baz = array_merge($foo, $bar); var_dump($baz);
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.26, 8.0.0 - 8.0.13, 8.1rc1 - rc3
array(2) { ["one"]=> int(101) ["two"]=> int(201) }

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