Question

是否有可能从PHP数组到JSON数组？如果是这样，有人可以进一步解释一下吗？

events: [
    {
        title: 'Test event',
        location: 'Test location',
        start: {
            date: '20140607', time: '17.00'
        },
        end: {
            date: '20140623', time: '17.00'
        }
    },
    {
        title: 'Test event',
        location: 'Test location',
        start: {
            date: '20140607', time: '17.00'
        },
        end: {
            date: '20140623', time: '17.00'
        }
    }
],

这是我到目前为止所做的：

<?php
   $json->title = 'Test event';
   $json->location  = 'Test location';

   echo json_encode($json);
?>

{"title":"Test event","location":"Test location"}

Answer 1

你走在正确的轨道上，但为了更进一步，你必须使它成为多维的（你可以把它写成一个对象，但我更喜欢数组）：

<?php
$jsonArr['title'] = 'Test event';
$jsonArr['location']  = 'Test location';

$jsonArr['start']['date']= '20140607';
$jsonArr['start']['time']= '17.00';

$jsonArr['end']['date']= '20140607';
$jsonArr['end']['time']= '17.00';

echo json_encode($jsonArr);

//Or an object example:

$json->title = 'Test event';
$json->location  = 'Test location';

$json->start->date= '20140607';
$json->start->time= '17.00';

$json->end->date= '20140607';
$json->end->time= '17.00';

echo json_encode($json);

?>

{"title":"Test event","location":"Test location","start":{"date":"20140607","time":"17.00"},"end":{"date":"20140607","time":"17.00"}}

那应该没问题

Answer 2

您可以使用json_encode()的JSON_PRETTY_PRINT选项：

<?php
   $json = new stdClass();
   $json->title = 'Test event';
   $json->location  = 'Test location';

   echo json_encode($json, JSON_PRETTY_PRINT);
?>

修改

我如何开始{}，结束{}区域，并将其变成数组？

您可以像这样定义变量：

$json = array( 'events' => array( array( 'title' => 'Test event', 'location' => 'Test location', 'start' => array( 'date' => '20140607', 'time' => '17.00' ), 'end' => array( 'date' => '20140623', 'time' => '17.00' ) ), array( 'title' => 'Test event', 'location' => 'Test location', 'start' => array( 'date' => '20140607', 'time' => '17.00' ), 'end' => array( 'date' => '20140623', 'time' => '17.00' ) ) ) );

输出：

{ "events": [ { "title": "Test event", "location": "Test location", "start": { "date": "20140607", "time": "17.00" }, "end": { "date": "20140623", "time": "17.00" } }, { "title": "Test event", "location": "Test location", "start": { "date": "20140607", "time": "17.00" }, "end": { "date": "20140623", "time": "17.00" } } ] }

Answer 3

Json_encode也适用于数组：

从手册（http://www.php.net//manual/en/function.json-encode.php）：

<?php
$arr = array('a' => 1, 'b' => 2, 'c' => 3, 'd' => 4, 'e' => 5);

echo json_encode($arr);
?>

Ideone：http://ideone.com/rD2Yvg

修改如前所述，您可能正在寻找格式选项： http://www.php.net/manual/en/json.constants.php

特别是：JSON_PRETTY_PRINT

将PHP数组格式化为JSON数组

3 个答案: