没有从cURL得到任何错误消息或内容 [英] Not getting any error message or content from cURL

问题描述

使用下面的代码，我没有收到任何错误或内容。

Using the code below I'm not getting any kind of error or content.

我有兴趣获取我网站的内容 http://www.aptamitra.in 。

I'm interested in getting content of my website http://www.aptamitra.in.

$cookie = tempnam ("/tmp", "CURLCOOKIE");
$ch = curl_init();
//$timeout = 5;
curl_setopt( $ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 5.1; rv:1.7.3) Gecko/20041001 Firefox/0.10.1" );
curl_setopt( $ch, CURLOPT_URL, "http://www.aptamitra.in" );
curl_setopt( $ch, CURLOPT_COOKIEJAR, $cookie );
curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, true );
curl_setopt( $ch, CURLOPT_ENCODING, "" );
curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true );
curl_setopt( $ch, CURLOPT_AUTOREFERER, true );
curl_setopt( $ch, CURLOPT_SSL_VERIFYPEER, false );    # required for https urls
//curl_setopt( $ch, CURLOPT_CONNECTTIMEOUT, $timeout );
//curl_setopt( $ch, CURLOPT_TIMEOUT, $timeout );
//curl_setopt( $ch, CURLOPT_MAXREDIRS, 10 );
$content = curl_exec( $ch );
$response = curl_getinfo( $ch );
var_dump($content);
echo "<pre>";
print_r($response);  // iam getting response here.
curl_close ( $ch );

我使用 var_dump（$ content） print_r（$ response）如下所示

bool(false)

Array
(
    [url] => http://www.aptamitra.in/
    [content_type] => text/html; charset=UTF-8
    [http_code] => 302
    [header_size] => 4956
    [request_size] => 4984
    [filetime] => -1
    [ssl_verify_result] => 0
    [redirect_count] => 20
    [total_time] => 0.452
    [namelookup_time] => 0
    [connect_time] => 0
    [pretransfer_time] => 0
    [size_upload] => 0
    [size_download] => 0
    [speed_download] => 0
    [speed_upload] => 0
    [download_content_length] => 0
    [upload_content_length] => -1
    [starttransfer_time] => 0.124
    [redirect_time] => 0.328
    [redirect_url] => 
    [primary_ip] => 127.0.0.1
    [certinfo] => Array
        (
        )

    [primary_port] => 1080
    [local_ip] => 127.0.0.1
    [local_port] => 52230
)

我不知道为什么没有内容。

I don't know why there is no content.

推荐答案

每 curl_exec（） 文档：

成功返回TRUE，失败返回FALSE。但是，如果设置了 CURLOPT_RETURNTRANSFER 选项，它将在成功时返回结果，在失败时返回FALSE。

Returns TRUE on success or FALSE on failure. However, if the CURLOPT_RETURNTRANSFER option is set, it will return the result on success, FALSE on failure.

您对 var_dump（$ content）; 的调用显示 bool（false），其中表示 curl_exec（）失败。这就是为什么您没有得到任何响应内容的原因。使用 curl_errno（） 和/或 curl_error（） 找出原因。

Your call to var_dump($content); is showing bool(false), which means curl_exec() is failing. That is why you are not getting any response content. Use curl_errno() and/or curl_error() to find out why it is failing.

我注意到的一件事是 curl_getinfo（）正在报告 [redirect_count] => 20 。这是很多重定向。服务器可能会陷入无限的重定向循环，并且 curl_exec（）决定在一段时间后失败。请参见 CURLOPT_MAXREDIRS 。检查报告的错误号是否为 CURLE_TOO_MANY_REDIRECTS 。

One thing I do notice is curl_getinfo() is reporting [redirect_count] => 20. That is a lot of redirects. The server is likely getting stuck in an endless redirect loop and curl_exec() decides to fail after awhile. See CURLOPT_MAXREDIRS. Check if the error number being reported is CURLE_TOO_MANY_REDIRECTS.

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