json_encode()如何无法将字符串自动转换为int [英] how can json_encode() not auto convert string to int

问题描述

所以我有这个数组，

Array 
(
    [0] => Array ( 
         [task] => Sleeping 
         [duration] => 2 
    )
    [1] => Array ( 
         [task] => Eating 
         [duration] => 1
    ) 
)

当我json_encode()时，它会返回

when i json_encode() it, it returns

 [{"task":"Sleeping","duration":2},{"task":"Eating","duration":1}]

我需要成为现实

 [{"task":"Sleeping","duration":"2"},{"task":"Eating","duration":"1"}]

有什么办法吗?

推荐答案

json_encode 根据其值输出值类型，在您的情况下，它们是整数.为了将所有值都用引号引起来，您需要

json_encode outputs the values as per their type, in your case they are integers. In order to have all values wrapped in quotes you need to cast each value as a string:

<?php
$data = array(0 => array('task' => 'Sleeping', 'duration' => 2), 1 => array('task' => 'Eating', 'duration' => 1));
array_walk_recursive($data, function (&$value) { $value = (string)$value; });

header('content-type: application/json; charset=utf-8');
echo json_encode($data);

递归字符串强制转换由 deceze

Recursive string casting courtesy of deceze

输出:

[{"task":"sleeping"，"duration":"2"}，{"task":"Eating"，"duration":"1"}]

漂亮的打印输出:

[
    {
        "task": "Sleeping",
        "duration": "2"
    },
    {
        "task": "Eating",
        "duration": "1"
    }
]

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