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<?php $test = ['a' => 'plop', 'b' => 'plip']; $test = $test + ['b' => 'updated']; var_dump($test);
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { ["a"]=> string(4) "plop" ["b"]=> string(4) "plip" }

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