我有一个使用 PHP 到 Bing 的服务器端调用，将输入结果从一种语言存储为英语。如果连接速度很慢，该函数将超时并抛出一个时间超过 30 秒的丑陋 PHP 错误。有没有办法在 10 秒后停止翻译功能尝试并向用户抛出我写的自定义错误，而不是抛出系统错误？
脚本中调用的 PHP 代码：
//Translate product description from native language to english with Bing (Microsoft) API
if ($_POST['Translate_Code'] != 'en' ){//do not translate if already in english
require_once('./classes/Az1/BingTranslate.php');
$gt = new Az1_BingTranslateWrapper();
$lang_trans = $_POST['Translate_Code'];
/* Translate from "Native Language" to "English" */
$eng_description = $gt->translate($description, $lang_trans, "en");
} else{//language is english
$eng_description= $description;
}
必应翻译类相关：
class Az1_AccessTokenAuthentication {
/*
* Get the access token.
*
* @param string $grantType Grant type.
* @param string $scopeUrl Application Scope URL.
* @param string $clientID Application client ID.
* @param string $clientSecret Application client ID.
* @param string $authUrl Oauth Url.
*
* @return string.
*/
function getTokens($grantType, $scopeUrl, $clientID, $clientSecret, $authUrl){
try {
//Initialize the Curl Session.
$ch = curl_init();
//Create the request Array.
$paramArr = array (
'grant_type' => $grantType,
'scope' => $scopeUrl,
'client_id' => $clientID,
'client_secret' => $clientSecret
);
//Create an Http Query.//
$paramArr = http_build_query($paramArr);
//Set the Curl URL.
curl_setopt($ch, CURLOPT_URL, $authUrl);
//Set HTTP POST Request.
curl_setopt($ch, CURLOPT_POST, TRUE);
//Set data to POST in HTTP "POST" Operation.
curl_setopt($ch, CURLOPT_POSTFIELDS, $paramArr);
//CURLOPT_RETURNTRANSFER- TRUE to return the transfer as a string of the return value of curl_exec().
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, TRUE);
//CURLOPT_SSL_VERIFYPEER- Set FALSE to stop cURL from verifying the peer's certificate.
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
//Execute the cURL session.
$strResponse = curl_exec($ch);
//Get the Error Code returned by Curl.
$curlErrno = curl_errno($ch);
if($curlErrno){
$curlError = curl_error($ch);
throw new Exception($curlError);
}
//Close the Curl Session.
curl_close($ch);
//Decode the returned JSON string.
$objResponse = json_decode($strResponse);
if ($objResponse->error){
throw new Exception($objResponse->error_description);
}
return $objResponse->access_token;
} catch (Exception $e) {
echo "Exception-".$e->getMessage();
}
}
}
/*
* Class:HTTPTranslator
*
* Processing the translator request.
*/
class Az1_HTTPTranslator {
/*
* Create and execute the HTTP CURL request.
*
* @param string $url HTTP Url.
* @param string $authHeader Authorization Header string.
* @param string $postData Data to post.
*
* @return string.
*
*/
function curlRequest($url, $authHeader, $postData=''){
//Initialize the Curl Session.
$ch = curl_init();
//Set the Curl url.
curl_setopt ($ch, CURLOPT_URL, $url);
//Set the HTTP HEADER Fields.
curl_setopt ($ch, CURLOPT_HTTPHEADER, array($authHeader,"Content-Type: text/xml"));
//CURLOPT_RETURNTRANSFER- TRUE to return the transfer as a string of the return value of curl_exec().
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, TRUE);
//CURLOPT_SSL_VERIFYPEER- Set FALSE to stop cURL from verifying the peer's certificate.
curl_setopt ($ch, CURLOPT_SSL_VERIFYPEER, False);
if($postData) {
//Set HTTP POST Request.
curl_setopt($ch, CURLOPT_POST, TRUE);
//Set data to POST in HTTP "POST" Operation.
curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
}
//Execute the cURL session.
$curlResponse = curl_exec($ch);
//Get the Error Code returned by Curl.
$curlErrno = curl_errno($ch);
if ($curlErrno) {
$curlError = curl_error($ch);
throw new Exception($curlError);
}
//Close a cURL session.
curl_close($ch);
return $curlResponse;
}
}
class Az1_BingTranslateWrapper{
protected $_clientID = "####"; //Client ID of the application
protected $_clientSecret = "####";//Client Secret key of the application
protected $_authUrl = "https://datamarket.accesscontrol.windows.net/v2/OAuth2-13/";//OAuth Url
protected $_scopeUrl = "http://api.microsofttranslator.com";//Application Scope Url
protected $_grantType = "client_credentials";//Application grant type
protected $_accessToken = "";//Id generated from Microsoft
protected $_authHeader = "";//Takes access token created for input in Url
protected $_detectMethodUrl = "";//Forms Url for translation
protected $_strResponse = "";//translation of supplied text
public function translate($text, $lang_from, $lang_to){
//Create the AccessTokenAuthentication object.
$authObj = new Az1_AccessTokenAuthentication();
//Get the Access token.
$this->_accessToken = $authObj->getTokens($this->_grantType,$this->_scopeUrl,$this->_clientID,$this->_clientSecret,$this->_authUrl);
//Create the authorization Header string.
$this->_authHeader = "Authorization: Bearer ". $this->_accessToken;
//Create the Translator Object.
$translatorObj = new Az1_HTTPTranslator();
//HTTP Detect Method URL.
$this->_detectMethodUrl = "http://api.microsofttranslator.com/V2/Http.svc/Translate?text=".urlencode($text)."&from=".$lang_from."&to=".$lang_to;
//Ask for response as JSON
//Call the curlRequest.
$this->_strResponse = $translatorObj->curlRequest($this->_detectMethodUrl, $this->_authHeader);
//Remove XML formatting
$str_start = strrpos($this->_strResponse,'/">')+3;
$this->_strResponse = substr($this->_strResponse,$str_start,strlen($this->_strResponse)-$str_start-9);
return $this->_strResponse;
}