JSON PHP解析错误

Question

我收到了这个错误：

  

解析错误：语法错误，C：\ wamp \ www \ test.php中的意外T_STRING   在第2行

尝试从Reddit's front page

打印密钥时

如何解决* $ json_string *解析错误并显示Reddit's front page的密钥？提前谢谢。

test.php的

   <?php
        $json_string = "{"kind": "Listing", "data": {"modhash": "", "children": [{"kind": "t3", "data": {"domain": "i.imgur.com", "banned_by": null, "media_embed": {}, "subreddit": "pics", "selftext_html": null, "selftext": "", "likes": null, "link_flair_text": null, "id": "1d7lch", "clicked": false, "title": "Graves of a Catholic woman and her Protestant husband, who were not allowed to be buried together.", ... ";

        $a = json_decode($json_string);
        echo $a.keys();
    ?>

Answer 1

将其包裹在单引号内或转义双引号？

Answer 2

使用'来打开和关闭$ json_string的标签，如下所示：

$json_string='{"king": "Listing", ...}';

OR转义字符串里面的字符：

$json_string="{\"king\": \"Listing\", ...}";

Answer 3

不要自己把它放在一个字符串中，只需使用它。

    $a = json_decode(file_get_contents('http://www.reddit.com/.json'));

这会照顾你逃跑。