Microsoft Translator Azure使用PHP API返回null [英] Microsoft translator azure are returning null with PHP API

问题描述

输出为null，PHP版本为5.6.我将这一行添加到了PHP.INI文件中. 我已经尝试过使用HTTP和HTTP，但是它仍然显示null.我更新了主机地址，以包含API调用URL，如azure控制面板中所示.而且没有太多关于人们收到此错误的信息.

The output is null, PHP version is 5.6. I added the line to the PHP.INI file. I have tried with the HTTP and HTTP's but it still shows the null. I updated the host address to include the API call URL as shown in the azure control panel. And there is not much information about people receiving this error.

<?php

// NOTE: Be sure to uncomment the following line in your php.ini file.
// ;extension=php_openssl.dll

// **********************************************
// *** Update or verify the following values. ***
// **********************************************

// Replace the subscriptionKey string value with your valid subscription key.
$key = 'KEY_REMOVED';

$host = "https://southeastasia.api.cognitive.microsoft.com/sts/v1.0/issuetoken";
$path = "/translate?api-version=3.0";

// Translate to German and Italian.
$params = "&to=de&to=it";

$text = "Hello, world!";

if (!function_exists('com_create_guid')) {
  function com_create_guid() {
    return sprintf( '%04x%04x-%04x-%04x-%04x-%04x%04x%04x',
        mt_rand( 0, 0xffff ), mt_rand( 0, 0xffff ),
        mt_rand( 0, 0xffff ),
        mt_rand( 0, 0x0fff ) | 0x4000,
        mt_rand( 0, 0x3fff ) | 0x8000,
        mt_rand( 0, 0xffff ), mt_rand( 0, 0xffff ), mt_rand( 0, 0xffff )
    );
  }
}

function Translate ($host, $path, $key, $params, $content) {

    $headers = "Content-type: application/json\r\n" .
        "Content-length: " . strlen($content) . "\r\n" .
        "Ocp-Apim-Subscription-Key: $key\r\n" .
        "X-ClientTraceId: " . com_create_guid() . "\r\n";

    // NOTE: Use the key 'http' even if you are making an HTTPS request. See:
    // http://php.net/manual/en/function.stream-context-create.php
    $options = array (
        'http' => array (
            'header' => $headers,
            'method' => 'POST',
            'content' => $content
        )
    );
    $context  = stream_context_create ($options);
    $result = file_get_contents ($host . $path . $params, false, $context);
    return $result;
}

$requestBody = array (
    array (
        'Text' => $text,
    ),
);
$content = json_encode($requestBody);

$result = Translate ($host, $path, $key, $params, $content);

// Note: We convert result, which is JSON, to and from an object so we can pretty-print it.
// We want to avoid escaping any Unicode characters that result contains. See:
// http://php.net/manual/en/function.json-encode.php
$json = json_encode(json_decode($result), JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT);
echo $json;
?>

推荐答案

我知道，您的代码是从官方文档

As I known, your code is copied from the offical document Quickstart: Translate text with the Translator Text REST API (PHP).

根据

According to the section Base URLs of the reference Translator Text API v3.0, the $host value should be the one of the list below.

因此，您可以在代码中使用$host = "https://api.cognitive.microsofttranslator.com";而不进行任何更改.这是第一个问题.

So you can use $host = "https://api.cognitive.microsofttranslator.com"; in your code without any changes. It is the first issue.

第二， Authentication 标头取决于您的Cognitive Services订阅的API类型.

Second, the Authentication header is depended on your API type of your Cognitive Services subscription.

1. 如果您的API类型为Translator Text，如下图所示，您将不会在原始代码的函数Translate中更改任何$headers代码，该值取决于您的位置，例如southeastasia./li>

1. If your API type is Translator Text as the figure below, you will not change any $headers code in the function Translate of the origin code which value is depended on your location, such as southeastasia.

1. 如果您的API类型为All Cognitive Services，如下图所示，则需要在$headers代码中添加标头Ocp-Apim-Subscription-Region.

1. If your API type is All Cognitive Services as the figure below, you need to add a header Ocp-Apim-Subscription-Region in the $headers code.

$headers = "Content-type: application/json\r\n" .
        "Content-length: " . strlen($content) . "\r\n" .
        "Ocp-Apim-Subscription-Key: $key\r\n" .
        "Ocp-Apim-Subscription-Region: southeastasia\r\n" .
        "X-ClientTraceId: " . com_create_guid() . "\r\n";

注意 :文档中存在如下问题.

Note: there is an issue in the document as below.

然后，在我的环境中，PHP版本为7.2.12，我运行了php -f test.php，它工作正常，并针对上述两种不同情况返回了json响应，如下所示.

Then, in my environment, PHP version is 7.2.12, and I run php -f test.php which works fine and return the json response for the two different cases above, as below.

[
    {
        "detectedLanguage": {
            "language": "en",
            "score": 1
        },
        "translations": [
            {
                "text": "Hallo Welt!",
                "to": "de"
            },
            {
                "text": "Salve, mondo!",
                "to": "it"
            }
        ]
    }
]

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