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<?php $x = ['test' => ['bla', 'bli']]; $y = ['test' => ['blo', 'bly']]; $z = array_merge($x, $y); var_dump($z);
Output for git.master, git.master_jit, rfc.property-hooks
array(1) { ["test"]=> array(2) { [0]=> string(3) "blo" [1]=> string(3) "bly" } }

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