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PHP access to AI translation system PHP multilingual automatic translation implementation
PHP access to AI translation system PHP multilingual automatic translation implementation
Jul 25, 2025 pm 06:42 PM
Select the translation service and obtain the API key. It is recommended to use environment variable storage; 2. Use Guzzle and other HTTP libraries to send POST requests containing parameters such as source text and target language; 3. Analyze the returned JSON data to obtain translation results; 4. Do a good job of error handling and logging to improve stability, and complete implementation needs to be expanded in accordance with actual needs.
To realize automatic translation of multilinguals in PHP applications, the core idea is actually quite straightforward: it is to use mature AI translation services, such as APIs provided by Google, DeepL or Baidu Translation. We use PHP to initiate a request and send the text that needs to be translated. After they are processed, we will return the translation result. We will parse the results and use them in our own page or data. This doesn't sound complicated, but in practice, there are still some details that need to be pondered.
Solution
To implement PHP automatic translation, I usually do this:
The first is to choose a suitable translation service. It depends on your specific needs, such as budget, translation quality requirements, supported languages, and the ease of use of the API. The Google Cloud Translation API has a comprehensive function, DeepL performs well in European language matching, and Baidu Translation is also very useful in domestic scenarios. After selection, you need to apply for an API key. This thing must be kept properly and not written directly in the code. It is best to use environment variables or configuration management tools to access it.
Next is how to call the API in PHP. I personally prefer to use the Guzzle HTTP client library, which encapsulates various details of HTTP requests and is very convenient to use. Of course, if you just send a POST request, file_get_contents or native curl can also be handled, but Guzzle is more robust.
The basic call process is:
- The request body is usually in JSON format, including parameters such as source text, source language, target language, etc.
- Set request headers, such as
Content-Typeand authentication information (API Key). - Send POST request to the API endpoint of the translation service.
- Receive the response, parse the returned JSON data, and retrieve the translation result.
Here is a simple Guzzle example, of course, it will be more complicated in actual projects:
<?php
require 'vendor/autoload.php'; // Suppose you use Composer to manage dependencies using GuzzleHttp\Client;
use GuzzleHttp\Exception\RequestException;
/**
* Translate text using Google Cloud Translation API*
* @param string $text Text that needs to be translated* @param string $targetLang Target language code (eg, 'zh-CN', 'en')
* @param string $sourceLang source language code (eg, 'en', 'zh-CN' or 'auto' to let the API automatically detect)
* @return string|null Translated text or null (if failed)
*/
function translateText(string $text, string $targetLang, string $sourceLang = 'auto'): ?string
{
// It is strongly recommended to store API Key in environment variables instead of hard-code $apiKey = getenv('YOUR_GOOGLE_CLOUD_TRANSLATION_API_KEY');
if (!$apiKey) {
error_log("Translation API Key not set. Please set YOUR_GOOGLE_CLOUD_TRANSLATION_API_KEY environment variable.");
return null;
}
$client = new Client([
'base_uri' => 'https://translation.googleapis.com/', // Google Cloud Translation API endpoint 'timeout' => 5.0, // Request timeout]);
try {
$response = $client->post('language/translate/v2', [
'json' => [
'q' => $text,
'target' => $targetLang,
'source' => $sourceLang,
'key' => $apiKey,
// 'format' => 'html', // If the text contains HTML tags, you can specify the format],
// More options, such as model selection, etc., added according to the API documentation]);
$body = json_decode($response->getBody()->getContents(), true);
// Check whether the API response contains translation results if (isset($body['data']['translations'][0]['translatedText'])) {
return $body['data']['translations'][0]['translatedText'];
}
// If the response format does not meet the expected error_log("Translation API response format unexpected: " . json_encode($body));
return null;
} catch (RequestException $e) {
// Handle network errors and API errors (such as 4xx, 5xx status codes)
error_log("Translation API request failed: " . $e->getMessage());
if ($e->hasResponse()) {
error_log("API Error Response: " . $e->getResponse()->getBody()->getContents());
}
return null;
} catch (\Exception $e) {
//Catch other unknown exception error_log("An unexpected error occurred during translation: " . $e->getMessage());
return null;
}
}
// Example usage (in actual application, you might get text from database or user input)
// $originalText = "Hello, world! This is a test sentence.";
// $translated = translateText($originalText, 'zh-CN', 'en');
// if ($translated) {
// echo "Original: " . $originalText . "\n";
// echo "Translated: " . $translated . "\n";
// } else {
// echo "Translation failed.\n";
// }Of course, this is just a very basic framework. In practical applications, you also need to consider:
- **Error handling and
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