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<?php $a = [10000 => ['balance' => '50'], 42000 => ['balance' => '100']]; $b = [10000 => ['profit' => '20'], 42000 => ['profit' => '15']]; var_dump(array_merge($a, $b));
Output for git.master, git.master_jit, rfc.property-hooks
array(4) { [0]=> array(1) { ["balance"]=> string(2) "50" } [1]=> array(1) { ["balance"]=> string(3) "100" } [2]=> array(1) { ["profit"]=> string(2) "20" } [3]=> array(1) { ["profit"]=> string(2) "15" } }

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