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<?php $t1 = [3 => 21, 'test1' => 'test']; $t2 = [3 => 221, 'test1' => 'test2']; var_dump(array_merge($t1, $t2));
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { [0]=> int(21) ["test1"]=> string(5) "test2" [1]=> int(221) }

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