將一個PHP數組格式化爲JSON數組

Question

從PHP數組到一個JSON數組是可能的嗎？如果是這樣，有人可以進一步解釋一下嗎？

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' 
     } 
    } 
], 

這是我到目前爲止有：

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

    echo json_encode($json); 
?> 

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

Answer 1

你在正確的軌道上，但去進一步你必須使它成爲多維的（你可以把它寫成一個對象，但我更喜歡陣列）：

<?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"}} 

這應該對你很好

Answer 2

可以使用JSON_PRETTY_PRINT選項json_encode()：

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

    echo json_encode($json, JSON_PRETTY_PRINT); 
?> 

編輯：

如何我會做開始{}，結束{}區域，並將其放入數組中嗎？

可以定義變量是這樣的：

$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' 
    ) 
    ) 
) 
); 

它輸出：

{ 
    "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也適用於陣列：

從手冊（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

編輯： 正如前面所指出的，你可能會尋找格式化選項： http://www.php.net/manual/en/json.constants.php

特別：JSON_PRETTY_PRINT