这个数组怎么拆？

Array ( [0] => Array ( [country] => 越南 [dausum] => 300 ) [1] => Array ( [country] => 中国 [dausum] => 500 ) [2] => Array ( [country] => 香港 [dausum] => 600 ) )

这个大数组拆成

 $country=('越南','中国','香港');
 $data=('越南'=>'300','中国'=>300,'香港'=>'600);

---

$arr = 
[
  ['country' => '越南', 'dausum' => 300],
  ['country' => '中国', 'dausum' => 500],
  ['country' => '香港', 'dausum' => 600]
];

$country = array_column($arr, 'country');
$data = array_combine($country, array_column($arr, 'dausum'));

---

$arr = 
[
  ['country' => '越南', 'dausum' => 300],
  ['country' => '中国', 'dausum' => 500],
  ['country' => '香港', 'dausum' => 600]
];

$country = $data = array();
foreach($arr as $elem)
{
  $country[] = $elem['country'];
  $data[$elem['country']] = $elem['dausum'];
}