json - 如何从 PHP 文件输出格式正确的 JSON？

Question

我有这个代码:

<?php

    header('Content-Type: text/javascript; charset=UTF-8');
    header('Cache-Control: private, no-cache, no-store, must-revalidate');
    header('Pragma: no-cache');
    header('Expires: Sat, 01 Jan 2000 00:00:00 GMT');

    $data = array(
        "data" => array(
            "sender" => "Jhon Andrew",
            "recipient" => "Someone OverThe Internet",
            "conversation" =>
            array(
                "unix" => "1234567890",
                "message" => "Lorem ipsum dolor sit amet."
            ),
            array(
                "unix" => "0987654321",
                "message" => "Tema tis rolod muspi merol."
            )
        )
    );

    echo json_encode($data);

?>

我期待这样的结果:

{
    "data": {
        "sender":"Jhon Andrew",
        "recipient":"Someone OverThe Internet",
        "message":"Lorem ipsum dolor sit amet."
    }
}

但我只在一行中显示了它，如下所示:

{"data":{"sender":"Jhon Andrew","recipient":"Someone OverThe Internet","message":"Lorem ipsum dolor sit amet."}}

如何才能像我期望的那样获得格式正确的 JSON 输出？这实际上并不重要，但我只是想以良好的格式查看结果。

---

...by the way, I just copied the headers from facebooks graph link because that is how I want to output the result. Example: graph.facebook.com/mOngsAng.gA

---

It is valid of course. All I want to know is how to output it like this: graph.facebook.com/mOngsAng.gA - As you can see it is properly formatted. I mean it has line breaks and indentions. Unlike what I am getting is just showed in one line.

Answer 1

看看 json_encode() 的 JSON_PRETTY_PRINT 标志在 php 手册中。您可以简单地使用:

$data = json_encode($data, JSON_PRETTY_PRINT);

如果您使用的不是 PHP 5.4 或更高版本，请尝试接受问题的答案:Pretty-Printing JSON with PHP .

但是，您的是有效 json 输出!