在PHP中解码字符串时出现意外行为（来自AJAX POST调用）

问题描述：

I have some javascript that sends data in JSON through POST format to a PHP script.

Everything works fine with "usual" characters, but I see inconsistencies when using, for example, vowels with accents such as "à". I would like to ask if anyone has suggestions on how to fix this.

This is the Javascript:

$.ajax({
        contentType: 'application/json',
        data: JSON.stringify({
            "action": params.action,
            "username": params.username,
            "page": params.page,
        }),
        processData: false,
        //dataType: 'json',
        url: "/w/ImolaCustom/SudoAutoedit.php",
        type: 'POST',
        success: function(data) { 
            ...
        }
    });

On the PHP side of things I do this:

$theData = json_decode(file_get_contents('php://input')), true);

The problem presents itself if I send something like:

params.page = "Società sportiva Bridge";

as $theData['page'] becomes "Societ\xc3\xa0 sportiva Bridge"

If I use utf8_decode($theData['page']) (or if I use it on the string passed from php://input before json_decoding it I get "Societ\xe0 sportiva Bridge" instead.

I tried different conversion functions like iconv(), mb_convert_variables() and mb_convert_encoding() to convert from UTF-8 to ISO-8859-1 with the same results as above.

I also tried encoding the string client-side with encodeURIComponent() or escape(). PHP receives the correct string (respectively "Societ%C3%A0%20sportiva%20Bridge" and "Societ%E0%20sportiva%20Bridge"), but after decoding it with rawurldecode() I still get "Societ\xc3\xa0 sportiva Bridge" and "Societ\xe0 sportiva Bridge" respectively.

Both files are on a CentOS machine and are saved with EOL Conversion in UNIX Mode and with Charset Encoding set to UTF-8 (editor is notepad++).

我有一些javascript通过POST格式将数据以JSON格式发送到PHP脚本。 p> \ n

“常用”字符一切正常，但是在使用带有重音符号的元音（例如“à”）时，我会看到不一致。我想问一下是否有人就如何解决此问题提出了建议。 p>

这是Javascript： p>

  $ .ajax（{  
 contentType：'application / json'，
 data：JSON.stringify（{
“action”：params.action，
“username”：params.username，
“page”：params.page，\  n}），
 processData：false，
 // dataType：'json'，
 url：“/ w / ImolaCustom / SudoAutoedit.php”，
n type：'POST'，
 success：function（data  ）{
 ... 
} 
}）; 
  code>  pre> 
 
 在PHP方面，我这样做： p> 
 
  
  $ theData = json_decode（file_get_contents（'php：// input'）），true）; 
  code>  pre> 
 
 如果我发送问题，问题就出现了 类似于： p> 
 
 
  params.page =“SocietàsportivaBridge”; 
  code>  pre> 
 
  as the the data ['page  ']成为“Societ \ xc3 \ xa0 sportiva Bridge” p> 
 
 
如果我使用utf8_decode（$ theData ['page']）（或者如果我在从php传递的字符串上使用它：/  /在j之前输入 son_decoding它我改为“Societ \ xe0 sportiva Bridge”。 p> 
 
 
我尝试了不同的转换函数，如iconv（），mb_convert_variables（）和mb_convert_encoding（），以便从UTF-8转换为ISO-  8859-1与上面的结果相同。 p> 
 
 
我也尝试使用encodeURIComponent（）或escape（）对字符串客户端进行编码。  PHP收到正确的字符串（分别为“Societ％C3％A0％20sportiva％20Bridge”和“Societ％E0％20sportiva％20Bridge”），但在用rawurldecode（）解码之后我仍然得到“Societ \ xc3 \ xa0 sportiva Bridge” 两个文件都在CentOS机器上，并在UNIX模式下与EOL Conversion一起保存，并且Charset Encoding设置为UTF-8（编辑器是notepad ++）和“Societ \ xe0 sportiva Bridge”。 p> 
 
 
 
  div>

答

Please try this:

$content = file_get_contents('php://input');
$content = mb_convert_encoding($content, 'UTF-8',
          mb_detect_encoding($content, 'UTF-8, ISO-8859-1', true));

$theData = json_decode($content, true);

OR:

$content = file_get_contents('php://input');
$content = html_entity_decode(mb_convert_encoding($content, 'HTML-ENTITIES', "UTF-8"));

$theData = json_decode($content, true);

I hope this will help you.

在PHP中解码字符串时出现意外行为（来自AJAX POST调用）

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