Question

PHP 二维索引数组怎么转化成json字符串数组？

Answer 1

json_encode()就是将PHP数组转换成Json

如：$array = array("name" => "Eric","age" => 23); echo json_encode($array);

程序将打印出 ： {“name”:”Eric”,”age”:23}

追问

 print_r(json_encode($arr)); 之后结果如上图，为啥会丢失主键啊

追答

Array
(
[0] => Array
(
[学号] => 025
[姓名] => 久飞
)

[1] => Array
(
[学号] => 025
[姓名] => 久飞
)

)
[{"\u5b66\u53f7":"025","\u59d3\u540d":"\u4e45\u98de"},{"\u5b66\u53f7":"025","\u59d3\u540d":"\u4e45\u98de"}]

我的是这样

Answer 2

json_encode($array, JSON_FORCE_OBJECT | JSON_UNESCAPED_UNICODE)