我有一个免费的API摆弄,一切都很好,但偶尔我得到下面的错误。致命错误“无效数据接收”
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,为什么发生这种情况?
下面是引用相关规范。
感谢所有额外的帮助。
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;
}
}
段从index.php文件
$result = myFunc("getInfo");
在异常消息中包含$ res中的json,所以我们/您可以看到问题所在。 – 2013-05-12 19:24:45
它在底部说得很对,不是吗?它抛出一个异常,因为'curl_exec'返回'false'。它为什么会返回错误?另一端的服务器遇到请求问题。如果它间歇发生,它可能是服务器负载或片状连接。如果它是可重复的,请求有问题。 – alexis 2013-05-12 19:25:53
@alexis我相信你对服务器负载或片状连接是正确的,因为它现在再次正常工作。顺便说一句,有没有一种方法,我们可以探讨,如果它真的是错误的原因? – 2013-05-12 19:35:16