В современных браузерах вы можете использовать структуру данных Map
вместо объекта.
Объект Map может выполнять итерацию своих элементов в порядке размещения ...
blockquote>
Каждый раз, когда Вы пытаетесь возвратить ответ JSON для API или иначе удостовериться, что Вы имеете надлежащие заголовки и также удостоверяетесь, что возвращаете допустимые данные JSON.
Вот демонстрационный сценарий, который помогает Вам возвратить ответ JSON из массива PHP или из файла JSON.
Сценарий PHP (Код):
<?php
// Set required headers
header('Content-Type: application/json; charset=utf-8');
header('Access-Control-Allow-Origin: *');
/**
* Example: First
*
* Get JSON data from JSON file and retun as JSON response
*/
// Get JSON data from JSON file
$json = file_get_contents('response.json');
// Output, response
echo $json;
/** =. =.=. =.=. =.=. =.=. =.=. =.=. =.=. =.=. =.=. =. */
/**
* Example: Second
*
* Build JSON data from PHP array and retun as JSON response
*/
// Or build JSON data from array (PHP)
$json_var = [
'hashtag' => 'HealthMatters',
'id' => '072b3d65-9168-49fd-a1c1-a4700fc017e0',
'sentiment' => [
'negative' => 44,
'positive' => 56,
],
'total' => '3400',
'users' => [
[
'profile_image_url' => 'http://a2.twimg.com/profile_images/1285770264/PGP_normal.jpg',
'screen_name' => 'rayalrumbel',
'text' => 'Tweet (A), #HealthMatters because life is cool :) We love this life and want to spend more.',
'timestamp' => '{{$timestamp}}',
],
[
'profile_image_url' => 'http://a2.twimg.com/profile_images/1285770264/PGP_normal.jpg',
'screen_name' => 'mikedingdong',
'text' => 'Tweet (B), #HealthMatters because life is cool :) We love this life and want to spend more.',
'timestamp' => '{{$timestamp}}',
],
[
'profile_image_url' => 'http://a2.twimg.com/profile_images/1285770264/PGP_normal.jpg',
'screen_name' => 'ScottMili',
'text' => 'Tweet (C), #HealthMatters because life is cool :) We love this life and want to spend more.',
'timestamp' => '{{$timestamp}}',
],
[
'profile_image_url' => 'http://a2.twimg.com/profile_images/1285770264/PGP_normal.jpg',
'screen_name' => 'yogibawa',
'text' => 'Tweet (D), #HealthMatters because life is cool :) We love this life and want to spend more.',
'timestamp' => '{{$timestamp}}',
],
],
];
// Output, response
echo json_encode($json_var);
Файл JSON (ДАННЫЕ JSON):
{
"hashtag": "HealthMatters",
"id": "072b3d65-9168-49fd-a1c1-a4700fc017e0",
"sentiment": {
"negative": 44,
"positive": 56
},
"total": "3400",
"users": [
{
"profile_image_url": "http://a2.twimg.com/profile_images/1285770264/PGP_normal.jpg",
"screen_name": "rayalrumbel",
"text": "Tweet (A), #HealthMatters because life is cool :) We love this life and want to spend more.",
"timestamp": "{{$timestamp}}"
},
{
"profile_image_url": "http://a2.twimg.com/profile_images/1285770264/PGP_normal.jpg",
"screen_name": "mikedingdong",
"text": "Tweet (B), #HealthMatters because life is cool :) We love this life and want to spend more.",
"timestamp": "{{$timestamp}}"
},
{
"profile_image_url": "http://a2.twimg.com/profile_images/1285770264/PGP_normal.jpg",
"screen_name": "ScottMili",
"text": "Tweet (C), #HealthMatters because life is cool :) We love this life and want to spend more.",
"timestamp": "{{$timestamp}}"
},
{
"profile_image_url": "http://a2.twimg.com/profile_images/1285770264/PGP_normal.jpg",
"screen_name": "yogibawa",
"text": "Tweet (D), #HealthMatters because life is cool :) We love this life and want to spend more.",
"timestamp": "{{$timestamp}}"
}
]
}
JSON Screeshot: