写入文件时停止 PHP 转义 JSON 字符串

Question

我正在尝试使用 JQuery 和 PHP 保存对 JSON 文件的更改，但似乎我的 PHP 脚本在保存 JSON 时转义了字符，这意味着我无法再次将其读回。

我使用以下代码将 JSON 对象（“family”）传递给 save.php：

function saveChanges() {
    $.ajax({
        type: "POST",
         url: "save.php",
         data: {
            data: JSON.stringify(family)
         },


         success: function(msg){
             console.log(data);
   }
 });
    }

然后 save.php 使用以下代码将 JSON 数据写入armstrong.json

<?php

$data = $_POST["data"];
echo $data;
$filename = 'armstrong.json';

if (is_writable($filename)) {
    if (!$handle = fopen($filename, "w")) {
         echo "Cannot open file ($filename)";
         exit;
    }

    if (fwrite($handle, parse_json($data)) === FALSE) {
        echo "Cannot write to file ($filename)";
        exit;
    }
echo "Success, wrote ($data) to file ($filename)";

fclose($handle);

} else {
    echo "The file $filename is not writable";
}

?>

但是该文件的写法如下：

{\"title\":\"Armstrong\",\"description\":\"The Armstrong Family\",\"patriarchID\":\"id1\",\"latestID\":8,\"members\":[{\"name\":\"Grandad\",\"id\":\"id1\",\"children\":[\"id2\",\"id3\"]},{\"name\":\"Dad\",\"id\":\"id2\",\"children\":[\"id4\",\"id5\",\"id6\",\"id7\"]},{\"name\":\"Uncle\",\"id\":\"id3\"},{\"name\":\"Child\",\"id\":\"id4\"},{\"name\":\"Child\",\"id\":\"id5\"},{\"name\":\"Child\",\"id\":\"id6\"},{\"name\":\"Child\",\"id\":\"id7\"},{\"name\":\"a\",\"id\":\"id8\"}]}{\"title\":\"Armstrong\",\"description\":\"The Armstrong Family\",\"patriarchID\":\"id1\",\"latestID\":9,\"members\":[{\"name\":\"Grandad\",\"id\":\"id1\",\"children\":[\"id2\",\"id3\"]},{\"name\":\"Dad\",\"id\":\"id2\",\"children\":[\"id4\",\"id5\",\"id6\",\"id7\"]},{\"name\":\"Uncle\",\"id\":\"id3\"},{\"name\":\"Child\",\"id\":\"id4\"},{\"name\":\"Child\",\"id\":\"id5\"},{\"name\":\"Child\",\"id\":\"id6\"},{\"name\":\"Child\",\"id\":\"id7\"},{\"name\":\"a\",\"id\":\"id8\"},{\"name\":\"a\",\"id\":\"id9\"}]}{\"title\":\"Armstrong\",\"description\":\"The Armstrong Family\",\"patriarchID\":\"id1\",\"latestID\":10,\"members\":[{\"name\":\"Grandad\",\"id\":\"id1\",\"children\":[\"id2\",\"id3\"]},{\"name\":\"Dad\",\"id\":\"id2\",\"children\":[\"id4\",\"id5\",\"id6\",\"id7\"]},{\"name\":\"Uncle\",\"id\":\"id3\"},{\"name\":\"Child\",\"id\":\"id4\"},{\"name\":\"Child\",\"id\":\"id5\"},{\"name\":\"Child\",\"id\":\"id6\"},{\"name\":\"Child\",\"id\":\"id7\"},{\"name\":\"a\",\"id\":\"id8\"},{\"name\":\"a\",\"id\":\"id9\"},{\"name\":\"a\",\"id\":\"id10\"}]}

任何想法如何我可以阻止它逃离角色吗？ JSON 文件应该如下所示

{
            "title"         :   "Armstrong",
            "description"   :   "The Armstrong Family",
            "patriarchID"   :   "id1",
            "latestID"      :   7,
            "members"       :   [
                {
                    "name"  :   "Grandad",
                    "id"    :   "id1",
                    "children": ["id2","id3"]
                },
                {
                    "name"  :   "Dad",
                    "id":       "id2",
                    "children": ["id4","id5","id6","id7"]
                },
                {
                    "name"  :   "Uncle",
                    "id"    :   "id3"
                },
                {
                    "name"  :   "Child",
                    "id" :  "id4"
                },
                {
                    "name"  :   "Child",
                    "id"    :   "id5"
                },
                {
                    "name"  :   "Child",
                    "id"    :   "id6"
                },
                {
                    "name"  :   "Child",
                    "id"    :   "id7"
                }

            ]
}

Answer 1

也许您开启了魔法引号在你的 php.ini 中。你应该把它们关掉。这将解释转义

编辑 - 如果您需要了解有关魔术引号的更多信息，请阅读此处< /a>.魔术引号很糟糕，如果您有权访问 php.ini，则应该将其关闭

Answer 2

您已启用 magic_quotes_gpc，并且在执行 $data = $_POST['data'] 时斜杠已经存在。

请参阅此答案：斜杠附加到我的所有帖子

顺便说一句可以用 file_put_contents

Answer 3

你必须解码你的 json 然后编码简单但丑陋的例子：

<?php
$json = file_get_contents('php://input');
$data = json_decode($json);
$json = json_encode(array($data));

echo $json;

?>