PHP 如果 file_get_contents 失败，请改为执行此操作
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PHP If file_get_contents fails, do this instead
提问by Drew
I have a function to translate the current text string using the Free Bing translator API. I just want to make sure if anything fails or something happens with the Application ID or I go over on requests, I don't want a big error to show.
我有一个使用 Free Bing 翻译器 API 翻译当前文本字符串的函数。我只是想确保应用程序 ID 是否出现任何故障或出现问题，或者我继续处理请求，我不想显示大错误。
The code I have right now is:
我现在拥有的代码是：
$translate_feed = file_get_contents('http://api.microsofttranslator.com/v2/Http.svc/Translate?appId=' . BING_APPID . '&text=' . urlencode($text) . '&from=en&to=' . $to_lan . '');
$translate = simplexml_load_string($translate_feed);
return $translate[0];
What I want to happen is if anything fails, so if I add in another character to the URL to make it invalid then I want it to just return $textso at least somethingshows.
我想要发生的是如果有任何失败，所以如果我在 URL 中添加另一个字符以使其无效，那么我希望它只是返回$text所以至少显示一些东西。
Thanks!
谢谢！
回答by Mathieu Dumoulin
Have you tried failing it on purpose to see what happens?
你有没有试过故意失败，看看会发生什么？
If it's an exception, just catch it and handle it...
如果是异常，只需捕获并处理它...
try{
//enter code to catch
}catch(Exception $ex){
//Process the exception
}
If there is an error outputted by the function, just @ to hide the error and handle the incorrect output of $translate_feed or $translate manually.
如果函数输出错误，只需@ 隐藏错误并手动处理$translate_feed 或$translate 的错误输出。
You can try failing it on purpose by simply passing an invalid URI to file_get_contents and then forcefully feed non XML or invalid XML to simplexml_load_string to see what happens.
您可以通过简单地将无效的 URI 传递给 file_get_contents，然后将非 XML 或无效的 XML 强制提供给 simplexml_load_string 以查看会发生什么，从而故意尝试使其失败。
回答by Wes Crow
$translate_feed = file_get_contents('http://api.microsofttranslator.com/v2/Http.svc/Translate?appId=' . BING_APPID . '&text=' . urlencode($text) . '&from=en&to=' . $to_lan . '');
if ( $translate_feed === false )
{
echo "failed";
}
回答by Azam Alvi
You can do like this
你可以这样做
if(@file_get_contents("yourFilePath.txt")){
echo "success";
}
回答by Botyk
/*
It's a modified file_get_contents()
get_contents(filename, use_include_path, context, offset, maxlen)
*/
function get_contents($url, $u = false, $c = null, $o = null) {
$headers = get_headers($url);
$status = substr($headers[0], 9, 3);
if ($status == '200') {
return file_get_contents($url, $u, $c, $o);
}
return false;
}
echo get_contents('https://batas.kz/');
回答by Max
there is $http_response_headervariable is being created in local scope that we can use it to check headers returned from server. Here is my implementation:
有$ http_response_header被在本地范围，我们可以用它来检查从服务器返回的头创建的变量。这是我的实现：
public function getData($url)
{
try {
$response = @file_get_contents($url);
if (isset($http_response_header)) {
if (!in_array('HTTP/1.1 200 OK', $http_response_header) &&
!in_array('HTTP/1.0 200 OK', $http_response_header)) {
throw new \Exception('Server did not return success header!');
}
}
return $response;
} catch (\Exception $ex) {
throw new TransportException($ex->getMessage(), $ex->getCode(), $ex);
}
}
回答by Eugen Rieck
$translate_feed = file_get_contents('http://api.microsofttranslator.com/v2/Http.svc/Translate?appId=' . BING_APPID . '&text=' . urlencode($text) . '&from=en&to=' . $to_lan . '');
$result=$text;
if ($translate_feed) {
$translate = simplexml_load_string($translate_feed);
if (is_array($translate)) $result=$translate[0];
}
return $result;
回答by Niet the Dark Absol
if( !$translate_feed) return "Failed";
if( !$translate_feed) return "Failed";
