如何使用 cURL 获取 JSON 数据并解码数据？
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【中文标题】如何使用 cURL 获取 JSON 数据并解码数据？【英文标题】：How to use cURL to get jSON data and decode the data? 【发布时间】：2013-05-18 01:08:24 【问题描述】：所以我有一个返回 JSON 对象的链接，我需要将其解码并放入 php 中的变量中。
网址
api.php?action=getThreads&hash=123fajwersa&node_id=4&order_by=post_date&order=desc&limit=1&grab_content&content_limit=1
这是它返回的对象
"count": 1,
"threads":
"38752":
"thread_id": 38752,
"node_id": 4,
"title": "The ShadyCraft Beta Launch!",
"reply_count": 45,
"view_count": 946,
"user_id": 2,
"username": "Shady",
"post_date": 1366956695,
"sticky": 0,
"discussion_state": "visible",
"discussion_open": 1,
"discussion_type": "",
"first_post_id": 226167,
"first_post_likes": 7,
"last_post_date": 1369094302,
"last_post_id": 228226,
"last_post_user_id": 2,
"last_post_username": "Shady",
"prefix_id": 19,
"tinhte_xentag_tags": "a:4:i:0;s:9:\"minecraft\";i:2;s:4:\"news\";i:3;s:14:\"private server\";i:1;s:10:\"shadycraft\";",
"content":
"count": 1,
"content":
"226167":
"post_id": 226167,
"thread_id": 38752,
"user_id": 2,
"username": "Shady",
"post_date": 1366956695,
"message": "[ATTACH=full]4143[\/ATTACH]\n \nWe've completely restructured ShadyCraft, and today will be the launch of the ShadyCraft beta.\n \nCurrent Features\n[LIST]\n[*]Towns\n[*]Nations\n[*]All out wars\n[*]A live update map\n[*]No White-list\n[*]Earn Money\n[*]Griefing allowed where possible\n[\/LIST]\nThese are just some features which have a lot more things behind them. For instance, there is town and nation upkeep, tax, kingdoms, mayors, and kings.\n \nWe really wanted to have the server self-governed and this is why griefing and PvP are allowed where ever they are possible. All towns and nations cannot be griefed by other members. You can create a town and buy plots for it and expand the town as you wish.\n \n[SIZE=4]All of this is shown in the live updating map located [URL='http:\/\/50.7.6.116:8123']here[\/URL].[\/SIZE]\n \n[SIZE=4][SIZE=6]Join the Beta Now[\/SIZE][\/SIZE]\n[SIZE=6]Server-IP: 50.7.6.116[\/SIZE]\n \n \n[USER=118053]Frenchy[\/USER] and [USER=4863]Wolfbane[\/USER]",
"ip_id": 747429,
"message_state": "visible",
"attach_count": 1,
"position": 0,
"likes": 7,
"like_users": "a:5:i:0;a:2:s:7:\"user_id\";i:105699;s:8:\"username\";s:6:\"kvothe\";i:1;a:2:s:7:\"user_id\";i:146724;s:8:\"username\";s:12:\"Graveyard219\";i:2;a:2:s:7:\"user_id\";i:70182;s:8:\"username\";s:9:\"wmbrown18\";i:3;a:2:s:7:\"user_id\";i:5473;s:8:\"username\";s:9:\"Oblivious\";i:4;a:2:s:7:\"user_id\";i:118053;s:8:\"username\";s:7:\"Frenchy\";",
"warning_id": 0,
"warning_message": "",
"anonymous_posting_real_user_id": 0,
"anonymous_posting_real_username": ""
我真的只对这个感兴趣
"title":"The ShadyCraft Beta Launch!",
"reply_count:"45,
"view_count": 946,
"user_id":2,
"username":"Shady",
"post_date":1366956695,
"sticky":0,
"discussion_state":"visible",
"discussion_open":1,
最后是消息
[ATTACH=full]4143[/ATTACH]
We've completely restructured ShadyCraft, and today will be the launch of the ShadyCraft beta.
Current Features
[LIST]
[*]Towns
[*]Nations
[*]All out wars
[*]A live update map
[*]No White-list
[*]Earn Money
[*]Griefing allowed where possible
[/LIST]
These are just some features which have a lot more things behind them. For instance, there is town and nation upkeep, tax, kingdoms, mayors, and kings.
We really wanted to have the server self-governed and this is why griefing and PvP are allowed where ever they are possible. All towns and nations cannot be griefed by other members. You can create a town and buy plots for it and expand the town as you wish.
[SIZE=4]All of this is shown in the live updating map located [URL='http://50.7.6.116:8123']here[/URL].[/SIZE]
[SIZE=4][SIZE=6]Join the Beta Now[/SIZE][/SIZE]
[SIZE=6]Server-IP: 50.7.6.116[/SIZE]
[USER=118053]Frenchy[/USER] and [USER=4863]Wolfbane[/USER]
那么如何提取 JSON 对象并将其放入 PHP 中的更正变量中，以便以后使用？
变量如：$username、$user_id、$message、$title、$discussionState 等。
我只需要知道如何检索 JSON 对象，然后将数据提取到 PHP 中的变量中。
我现在能够获取 PHP 数组，但在调用正确值时遇到了一些麻烦。这是数组。
Array ( [count] => 1 [threads] => Array ( [13] => Array ( [thread_id] => 13 [node_id] => 4 [title] => 论坛整合即将完成！ [reply_count] => 0 [view_count] => 0 [user_id] => 59 [username] => Faeron [post_date] => 1369257302 [sticky] => 0 [discussion_state] => 可见 [discussion_open] => 1 [discussion_type] => [first_post_id] => 23 [first_post_likes] => 0 [last_post_date] => 1369257302 [last_post_id] => 23 [last_post_user_id] => 59 [last_post_username] => Faeron [prefix_id] => 1 [content] => 数组 ([count] => 1 [content] => 数组 ( [23] => 数组 ( [post_id] => 23 [thread_id] => 13 [user_id] => 59 [用户名] => Faeron [post_date] => 1369257302 [消息] => 这是 自从我们开始将 phanime 论坛与 主站点。我们现在已经完成了与phanime的整合 论坛和主站点。你不会再注意到有两个 运行 phanime 的平台，但只有一个。我们的下一步是 为论坛设置主题，使其看起来像主站点！ [ip_id] => 268 [message_state] => 可见 [attach_count] => 0 [position] => 0 [likes] => 0 [like_users] => a:0: [warning_id] => 0 [warning_message] => ) ) ) ) ) )
现在假设这个数组被命名为$array，那么要获取第一个元素的值“[count]”，我不能只说以下内容：print $array["[count]"]
如果元素本身具有值作为数组，那就是[threads] 元素。我如何获得，也许是 [thread_id] 元素的值？
【问题讨论】：
【参考方案1】：我想这个会回答你的问题：P
$url="https://.../api.php?action=getThreads&hash=123fajwersa&node_id=4&order_by=post_date&order=desc&limit=1&grab_content&content_limit=1";
使用cURL
// Initiate curl
$ch = curl_init();
// Will return the response, if false it print the response
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
// Set the url
curl_setopt($ch, CURLOPT_URL,$url);
// Execute
$result=curl_exec($ch);
// Closing
curl_close($ch);
// Will dump a beauty json :3
var_dump(json_decode($result, true));
使用file_get_contents
$result = file_get_contents($url);
// Will dump a beauty json :3
var_dump(json_decode($result, true));
访问
$array["threads"][13/* thread id */]["title"/* thread key */]
和
$array["threads"][13/* thread id */]["content"/* thread key */]["content"][23/* post id */]["message" /* content key */];
【讨论】：
我已经更新了这个问题，但我在使用 JSON 返回的 PHP 数组时遇到了一点困难。如果可以，请阅读它的底部。 嗨！由于您的回答，我正在接近类似的问题，但仍然卡在atm，您介意看一下吗？ ***.com/questions/28033267/… 没错。CURLOPT_RETURNTRANSFER 给我正确的结果（y）谢谢！
花费数小时后，添加行 // 禁用 SSL 验证 curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);返回结果。【参考方案2】：
要获取不需要使用 cURL 的对象（您正在将另一个 dll 加载到内存中并具有另一个依赖项，除非您真的需要 curl 我会坚持使用内置的 php 函数），您可以使用一个简单的 php file_get_contents （网址）功能： http://il1.php.net/manual/en/function.file-get-contents.php
$unparsed_json = file_get_contents("api.php?action=getThreads&hash=123fajwersa&node_id=4&order_by=post_date&order=desc&limit=1&grab_content&content_limit=1");
$json_object = json_decode($unparsed_json);
然后 json_decode() 将 JSON 解析为 PHP 对象，或者如果您将 true 传递给第二个参数，则为数组。
http://php.net/manual/en/function.json-decode.php
例如：
$json = '"a":1,"b":2,"c":3,"d":4,"e":5';
var_dump(json_decode($json)); // Object
var_dump(json_decode($json, true)); // Associative array
【讨论】：
网址呢？如何首先检索 jSON 对象并将其设置为 $json 变量？ url 为：/api.php?action=getThreads&hash=123fajwersa&node_id=4&order_by=post_date&order=desc&limit=1&grab_content&content_limit=1 返回 JSON 对象。
我已经更新了这个问题，但我在处理由 jSON 返回的 PHP 数组时遇到了一点困难。如果可以，请阅读它的底部。
这是不正确的。您不能将 URL 传递给 file_get_contents()... 它必须是文件名（路径）。
@HenrikPetterson：file_get_contents 绝对可以用于获取 URL，而不仅仅是本地文件。尽管 cURL 提供了更多选项，并且对于除了最简单的用例之外的所有用例来说可能是更好的选择。在这里查看更多信息：php.net/manual/en/function.file-get-contents.php【参考方案3】：
你可以用它来卷曲：
function fakeip()
return long2ip( mt_rand(0, 65537) * mt_rand(0, 65535) );
function getdata($url,$args=false)
global $session;
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,$url);
curl_setopt($ch, CURLOPT_HTTPHEADER, array("REMOTE_ADDR: ".fakeip(),"X-Client-IP: ".fakeip(),"Client-IP: ".fakeip(),"HTTP_X_FORWARDED_FOR: ".fakeip(),"X-Forwarded-For: ".fakeip()));
if($args)
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS,$args);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
//curl_setopt($ch, CURLOPT_PROXY, "127.0.0.1:8888");
$result = curl_exec ($ch);
curl_close ($ch);
return $result;
然后读取 Json：
$result=getdata("https://example.com");
然后：
///Deocde Json
$data = json_decode($result,true);
///Count
$total=count($data);
$Str='<h1>Total : '.$total.'';
echo $Str;
//You Can Also Make In Table:
foreach ($data as $key => $value)
echo ' <td><font face="calibri"color="red">'.$value[type].' </font></td><td><font face="calibri"color="blue">'.$value[category].' </font></td><td><font face="calibri"color="green">'.$value[amount].' </font></tr><tr>';
echo "</tr></table>";
你也可以使用这个：
echo '<p>Name : '.$data['result']['name'].'</p>
<img src="'.$data['result']['pic'].'"><br>';
希望这会有所帮助。
【讨论】：
这对我有帮助。但我不得不在我的用例的 foreach 输入中用 $data['result'] 替换 $data。【参考方案4】：使用此功能：http://br.php.net/json_decode 这将自动创建 PHP 数组。
【讨论】：
【参考方案5】：你也可以使用
$result = curl_exec($ch);
return response()->json(json_decode($result));
【讨论】：
【参考方案6】：你可以用这个：
curl_setopt_array($ch, $options);
$resultado = curl_exec($ch);
$info = curl_getinfo($ch);
print_r($info["url"]);
【讨论】：
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