cURL代码0

Question

我看过以前关于cURL和HTTP code 0的帖子，但它们没有帮助。

我可以用下面的脚本从localhost调用www.bambooping.com -也就是说，test_curl.php on localhost调用test_curl2.php on bambooping.com。但是，如果我在bambooping.com上运行它，我会得到HTTP 0。(我知道在同一主机上调用它是愚蠢的-它只是为了隔离问题。)

在bambooping.com上，没有设置safe_mode，并且已经编译了curl (也就是说，应该是因为我可以cURL in)。这非常奇怪--调用主机正在阻止cURL。为什么用cURL调用会像这样失败，而用cURL调用同一台主机却没问题？

test_curl.php：

<?php
error_reporting(E_ALL); ini_set("display_errors", 1);
function curl_download($Url){
// is cURL installed yet?
if (!function_exists('curl_init')){
    die('Sorry cURL is not installed!');
}

// OK cool - then let's create a new cURL resource handle
$ch = curl_init();

// Now set some options (most are optional)

// Set URL to download
curl_setopt($ch, CURLOPT_URL, $Url);

// Set a referer
//    curl_setopt($ch, CURLOPT_REFERER, $_SERVER['REQUEST_URI']);

// make it blank - then it is ignored - otherwise, checked and error returned!
curl_setopt($ch, CURLOPT_REFERER, '');

// User agent
curl_setopt($ch, CURLOPT_USERAGENT, "MozillaXYZ/1.0");

// Include header in result? (0 = yes, 1 = no)
curl_setopt($ch, CURLOPT_HEADER, 0);

// Should cURL return or print out the data? (true = return, false = print)
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

// Timeout in seconds
curl_setopt($ch, CURLOPT_TIMEOUT, 10);

//    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);

// Download the given URL, and return output
$output = curl_exec($ch);

print_r(curl_getinfo($ch));

// Close the cURL resource, and free system resources
curl_close($ch);

return $output;
}

$str = curl_download("http://www.bambooping.com/test_curl2.php");
echo $str;
?>

test_curl2.php

<?php
echo "I am here";
?>

curl_getinfo为：

Array
(
[url] => http://www.bambooping.com/test_curl2.php
[content_type] => 
[http_code] => 0
[header_size] => 0
[request_size] => 0
[filetime] => -1
[ssl_verify_result] => 0
[redirect_count] => 0
[total_time] => 0
[namelookup_time] => 4.3E-5
[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] => 0
[starttransfer_time] => 0
[redirect_time] => 0
)

想法？我刚喝完..。谢谢-

Answer 1

请检查是否有curl错误

它告诉你问题所在

<?php
    if(curl_errno($ch))  echo 'Curl error: ' . curl_error($ch);  
?>

Answer 2

www.bambooping.com的服务器可能位于阻止传出HTTP请求的防火墙后面。即使是同一台服务器，请求仍然需要在野外解析DNS。

您可以编辑服务器上的hosts文件，使其包含127.0.0.1 www.bampooing.com。或者，您可以将URL更改为http://127.0.0.1/test_curl2.php，因为此本地主机域可能未被防火墙阻止。