使用PHP解码Microsoft转换器API的JSON输出

Question

这个问题似乎特定于microsofttranslator.com所以请...任何答案,如果你可以测试它...

使用以下URL进行翻译:http: //api.microsofttranslator.com/V2/Ajax.svc/TranslateArray ..我通过cURL发送了一些很棒的参数,并得到以下结果:

 [
      {
           "From":"en",
           "OriginalTextSentenceLengths":[13],
           "TranslatedText":"?????",
           "TranslatedTextSentenceLengths":[5]
      },
      {
           "From":"en",
           "OriginalTextSentenceLengths":[16],
           "TranslatedText":"?????",
           "TranslatedTextSentenceLengths":[5]
      }
 ]

当我json_decode($output, true);在cURL的输出上使用时,json_decode会在返回的JSON中提供关于语法不合适的错误:

 json_last_error() == JSON_ERROR_SYNTAX

使用JSON返回的标头:

响应标题

 Cache-Control:no-cache
 Content-Length:244
 Content-Type:application/x-javascript; charset=utf-8
 Date:Sat, 06 Aug 2011 13:35:08 GMT
 Expires:-1
 Pragma:no-cache
 X-MS-Trans-Info:s=63644

原始内容:

 [{"From":"en","OriginalTextSentenceLengths":[13],"TranslatedText":"?????","TranslatedTextSentenceLengths":[5]},{"From":"en","OriginalTextSentenceLengths":[16],"TranslatedText":"?????","TranslatedTextSentenceLengths":[5]}]

cURL代码:

    $texts = array("i am the best" => 0, "you are the best" => 0);
    $ch = curl_init(); 
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    $data = array(
        'appId' => $bing_appId,
        'from' => 'en',
        'to' => 'zh-CHS',
        'texts' => json_encode(array_keys($texts))
    );
    curl_setopt($ch, CURLOPT_URL, $bingArrayUrl . '?' . http_build_query($data)); 
    $output = curl_exec($ch); 

Answer 1

API返回错误的字节顺序标记(BOM).
字符串数据本身是UTF-8,但前面加上U+FEFFUTF-16 BOM.只需删除前两个字节和json_decode.

...
$output = curl_exec($ch);
// Insert some sanity checks here... then,
$output = substr($output, 3);
...
$decoded = json_decode($output, true);

这是我的测试代码的全部内容.

$texts = array("i am the best" => 0, "you are the best" => 0);
$ch = curl_init(); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$data = array(
    'appId' => $bing_appId,
    'from' => 'en',
    'to' => 'zh-CHS',
    'texts' => json_encode(array_keys($texts))
    );
curl_setopt($ch, CURLOPT_URL, $bingArrayUrl . '?' . http_build_query($data)); 
$output = curl_exec($ch);
$output = substr($output, 3);
print_r(json_decode($output, true));

哪能给我

Array
(
    [0] => Array
        (
            [From] => en
            [OriginalTextSentenceLengths] => Array
                (
                    [0] => 13
                )

            [TranslatedText] => ?????
            [TranslatedTextSentenceLengths] => Array
                (
                    [0] => 5
                )

        )

    [1] => Array
        (
            [From] => en
            [OriginalTextSentenceLengths] => Array
                (
                    [0] => 16
                )

            [TranslatedText] => ?????
            [TranslatedTextSentenceLengths] => Array
                (
                    [0] => 5
                )

        )

)

BOM上的维基百科条目