php - array_walk 関数で現在のインデックスを取得する

Question

$A = ["0" => "a", "1" => "b", "2" => "c"];
$B = ["0" => "aa", "1" => "bb", "2" => "cc"]
array_walk($A,function($item) use($B){
     $temp[] = $item;
     $temp[] = $B[?];
});

を埋める方法は？その上？array_walkで現在のインデックスを取得する方法は?

Answer 1

私が正しく理解していれば、そのようなことはうまくいくでしょう

$A = ["0" => "a", "1" => "b", "2" => "c"];
$B = ["0" => "aa", "1" => "bb", "2" => "cc"]
array_walk($A,function($item, $key) use($B){
     $temp[] = $item;
     $temp[] = $B[$key];
});