JSON编码与[]

Question

我似乎无法让我的json_encode包括括号.. 任何帮助吗？

我的代码是：

$th = json_encode(array("4" => "four", "8" => "eight")); 
echo $th; 

，输出是：

{"4":"four","8":"eight","9":"\n"} 

我需要发送给API的输出是：

[{"4":"four","8":"eight","9":"\n"}] 

如何获取JSON数组中的括号？ 谢谢！

Answer 1

使用此

$th = json_encode(array(array("4" => "four", "8" => "eight", "9" => "\n"))); 

Answer 2

你应该做的是这样的：

$th = json_encode(array(array("4" => "four", "8" => "eight")));