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<?php $a['a'] = array(3 => '123', 5 => '234'); $p = array(6 => '789', 9 => '876'); $a['a'] = $a['a'] + $p; var_dump($a);
Output for git.master, git.master_jit, rfc.property-hooks
array(1) { ["a"]=> array(4) { [3]=> string(3) "123" [5]=> string(3) "234" [6]=> string(3) "789" [9]=> string(3) "876" } }

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