我有一個免費的API擺弄,一切都很好,但偶爾我得到下面的錯誤。致命錯誤「無效數據接收」
Fatal error: Uncaught exception 'Exception' with message 'Invalid data received, please make sure connection is working and requested API exists' in /MY SERVER PATH/functions.php:39 Stack trace: #0 /MY SERVER PATH/index.php(5): myFunc('getInfo') #1 {main} thrown in /MY SERVER PATH/functions.php on line 39
我只是好奇,爲什麼發生這種情況?
下面是引用相關規範。
感謝所有額外的幫助。
SNIP PET FROM的functions.php
function myFunc($method, array $req = array()) {
// API settings
$key = 'MY API KEY'; // your API-key
$secret = 'MY SECRET'; // your Secret-key
$req['method'] = $method;
$mt = explode(' ', microtime());
$req['nonce'] = $mt[1];
// generate the POST data string
$post_data = http_build_query($req, '', '&');
$sign = hash_hmac("sha512", $post_data, $secret);
// generate the extra headers
$headers = array(
'Sign: '.$sign,
'Key: '.$key,
);
// our curl handle (initialize if required)
static $ch = null;
if (is_null($ch)) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; PHP client; '.php_uname('s').'; PHP/'.phpversion().')');
}
curl_setopt($ch, CURLOPT_URL, 'URL TO THE API');
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
// run the query
$res = curl_exec($ch);
if ($res === false) throw new Exception('Could not get reply: '.curl_error($ch));
$dec = json_decode($res, true);
if (!$dec) throw new Exception('Invalid data received, please make sure connection is working and requested API exists');
if (!$dec){
echo '';
}else{
return $dec;
}
}
段從index.php文件
$result = myFunc("getInfo");
在異常消息中包含$ res中的json,所以我們/您可以看到問題所在。 – 2013-05-12 19:24:45
它在底部說得很對,不是嗎?它拋出一個異常,因爲'curl_exec'返回'false'。它爲什麼會返回錯誤?另一端的服務器遇到請求問題。如果它間歇發生,它可能是服務器負載或片狀連接。如果它是可重複的,請求有問題。 – alexis 2013-05-12 19:25:53
@alexis我相信你對服務器負載或片狀連接是正確的,因爲它現在再次正常工作。順便說一句,有沒有一種方法,我們可以探討,如果它真的是錯誤的原因? – 2013-05-12 19:35:16