向JSON数组中添加JSON对象
向JSON数组中添加JSON对象
提问于 2014-03-14 18:05:31
例如，如果我做了这样的事情：
<?php
//first json object
$cars[] = "1";
$cars[] = "2";
$cars[] = "3";
$cars[] = "4";
//second json object
$cars[] = "22";
$cars[] = "33";
$cars[] = "44";
$cars[] = "55";
//now i need to add them to the json array "cars"
echo json_encode(array("cars" => $cars));
?>产出将成为：
{"cars":["1","2","3","4"]}然而，我希望它是：
{
"cars": [
{"1", "2", "3", "4"},
{"22", "33", "44", "55"}
]
}编辑(编辑我的老问题)：
首先，我想要的结果不是一个有效的JSON。
一定是这样的：
{
"cars": [
["1", "2", "3", "4"],
["22", "33", "44", "55"]
]
}为了获得上述结果，只需执行以下操作：
整个代码：
<?php
// Add the first car to the array "cars":
$car = array("1","2","3","4");
$cars[] = $car;
// Add the second car to the array "cars":
$car = array("22","33","44","55");
$cars[] = $car;
//Finally encode using json_encode()
echo json_encode(array("cars" => $cars));
?>回答 2
Stack Overflow用户
回答已采纳
发布于 2014-03-14 18:06:30
下面是使用有效的JSON可以得到的最接近的结果：
$cars[] = array("1","2","3","4");
$cars[] = array("22","33","44","55");
echo json_encode(array("cars" => $cars));
//{"cars":[["1","2","3","4"],["22","33","44","55"]]}
$cars[] = (object) array("1","2","3","4");
$cars[] = (object) array("22","33","44","55");
echo json_encode(array("cars" => $cars));
//{"cars":[{"0":"1","1":"2","2":"3","3":"4"},{"0":"22","1":"33","2":"44","3":"55"}]}Stack Overflow用户
发布于 2014-03-14 18:13:54
在JSON中，[]是一个索引数组，例如：array(1,2,3)
{}是一个关联数组，例如：array('one'=>1, 'two'=>2, 'three'=>3)
您在示例中指定的语法无效。你能得到的最接近的是：
echo json_encode(array(
'cars'=>array(
array(1,2,3,4),
array(11,22,33,44)
)
));
//output: {"cars":[[1,2,3,4],[11,22,33,44]]}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/22412608
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