如何写json编码的数组看起来像这样

Question

我想获取特定的json响应，但响应中的一个数组作为对象传递。

"countries":{"TW":8,"JP":5,"AU":6,"MX":12,"CL":4,"HK":2,"US":14,"AR":4,"ES":1,"BR":1,"MY":9,"IT":12,"DE":1,"GB":1,"PE":6,"TR":1,"KR":3,"IE":1,"CA":2,"FR":1,"VE":2,"IL":1,"PT":1,"NL":1,"PL":1} 

但我需要它看起来像这样：

"countries":[["Brazil", 40.5],["US", 30],["Canada", 19.5], ["England", 10]] 

如何构建在PHP数组的json_encode响应样子呢？

现在我有：

$countries['US']=14; 
$countries['CL']=4; 
.... 

然后我数组（$国家）添加到$ data数组，这是编码

$data['countries'] = $countries; 

的一个JSON这让我张贴第一结果。但我需要那第二种格式。

任何人都知道我错过了什么？

谢谢！

Answer 1

$countries = Array(); 
$countries[] = Array('Brazil', 40.5); 
...