php curl_exec返回空

Question

 $ch = curl_init();
 curl_setopt($ch, CURLOPT_URL, $url);
 curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
 curl_setopt($ch, CURLOPT_PROXY, $proxy); // $proxy is ip of proxy server
 curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
 curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
 curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
 curl_setopt($ch, CURLOPT_TIMEOUT, 10);
 $httpCode = curl_getinfo($ch , CURLINFO_HTTP_CODE); // this results 0 every time
 echo '<br> curl'.$ch; //this line outputs resource id#5
 $exec = stripslashes(curl_exec($ch)); 
 echo '<br> exec'.curl_exec($ch); //this results blank

我很困惑，為什么$ exec不會返回任何東西，我是新來的卷曲請幫助，提前謝謝

Answer 1

當請求失敗時， curl_exec將返回false 。 調整您的功能：

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_PROXY, $proxy); // $proxy is ip of proxy server
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
curl_setopt($ch, CURLOPT_TIMEOUT, 10);

$httpCode = curl_getinfo($ch , CURLINFO_HTTP_CODE); // this results 0 every time
$response = curl_exec($ch);

if ($response === false) 
    $response = curl_error($ch);

echo stripslashes($response);

curl_close($ch);

這樣你就會看到卷曲錯誤

Answer 2

結果返回0表示您無法連接到服務器，因此請重新檢查您的代理並增加超時:)

Answer 3

在實際進行HTTP調用之前，您正嘗試訪問HTTP響應代碼。 按如下方式反轉執行：

$response = curl_exec($ch);
$httpCode = curl_getinfo($ch , CURLINFO_HTTP_CODE); // this results 0 every time

Answer 4

嘗試：

curl_setopt($ch, CURLOPT_TIMEOUT, 50);

也許響應時間超過10。

我遇到了同樣的問題，我這樣解決了。