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<?php $a = ['a' => ['1', '2']]; $b = ['a' => ['3'], 'b' => ['4']]; print_r(array_replace_recursive($a,$b));
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [a] => Array ( [0] => 3 [1] => 2 ) [b] => Array ( [0] => 4 ) )

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