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<?php $first = [ 1 => ['qty' => 3], 2 => ['qty' => 4], 3 => ['qty' => 2], ]; $second = [ 1 => ['qty_rest' => 1] ]; var_dump(array_merge($first, $second));
Output for git.master, git.master_jit, rfc.property-hooks
array(4) { [0]=> array(1) { ["qty"]=> int(3) } [1]=> array(1) { ["qty"]=> int(4) } [2]=> array(1) { ["qty"]=> int(2) } [3]=> array(1) { ["qty_rest"]=> int(1) } }

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