检索跨域数据php [英] Retrieving cross-domain data php

问题描述

我想要做的是从wikipedia检索一些数据，用ajax。我离开客户端脚本后，然后尝试检索一些随机内容。我尝试了fopen（）和fread（）方法，但它没有工作，然后我发现了一些文章，有互联网提供商使用代理的代码。因为这是我的case我尝试下面的代码，但它没有给任何响应。

 <？php 
 $ opts = array（'http'=> array（'proxy'=>'tcp：//10.10.10.101：8080'，'request_fulluri'=> true） 
 $ context = stream_context_create（$ opts）; 
 $ data = file_get_contents（'http://www.php.net'，false，$ context）; 
 echo $ data; 
？> 
  

好，所以我尝试建议代码，使用适当的代理值：

 <？php 
 
 
 $ url ='http://www.php.net'; 
 $ proxy = '10 .10.10.101：8080'; 
 // $ proxyauth ='user：password'; 
 
 $ ch = curl_init（）; 
 curl_setopt（$ ch，CURLOPT_URL，$ url）; 
 curl_setopt（$ ch，CURLOPT_PROXY，$ proxy）; 
 // curl_setopt（$ ch，CURLOPT_PROXYUSERPWD，$ proxyauth）; 
 curl_setopt（$ ch，CURLOPT_FOLLOWLOCATION，1）; 
 curl_setopt（$ ch，CURLOPT_RETURNTRANSFER，1）; 
 curl_setopt（$ ch，CURLOPT_HEADER，1）; 
 $ curl_scraped_pa​​ge = curl_exec（$ ch）; 
 curl_close（$ ch）; 
 
 echo $ curl_scraped_pa​​ge;但是它给我这个错误：HTTP / 1.0 403禁止日期：星期一，2012年7月02日09：0 $ @ 
 



< 41:20 GMT服务器：Apache Content-Type：text / plain目标主机被禁止

我不明白为什么它不工作，问题。

解决方案

这不是一个真正的跨域问题，因为你从服务器而不是浏览器加载数据。 >

要通过代理从PHP加载网页 - 最好使用cURL（PHP http客户端： http://php.net/manual/zh-CN/book.curl.php ）。

这是一个例子 - 它来自一个类似的问题（http://stackoverflow.com/questions/5211887/how-to-use-curl-via-a-proxy）：

 <？php 
 
 
 $ url ='http://www.php.net'; 
 $ proxy = '10 .10.10.101：8080'; 
 // $ proxyauth ='user：password'; 
 
 $ ch = curl_init（）; 
 curl_setopt（$ ch，CURLOPT_URL，$ url）; 
 curl_setopt（$ ch，CURLOPT_PROXY，$ Proxy）; 
 // curl_setopt（$ ch，CURLOPT_PROXYUSERPWD，$ proxyauth）; 
 curl_setopt（$ ch，CURLOPT_FOLLOWLOCATION，1）; 
 curl_setopt（$ ch，CURLOPT_RETURNTRANSFER，1）; 
 curl_setopt（$ ch，CURLOPT_HEADER，1）; 
 $ curl_scraped_pa​​ge = curl_exec（$ ch）; 
 curl_close（$ ch）; 
 
 echo $ curl_scraped_pa​​ge; 
  

如果您的代理需要身份验证 - 您可以设置$ proxyauth var ...

What I'd like to do is retrieve some data from wikipedia, with ajax. I left the client-side scripting for afterwards and tried retrieving some random content. I tried with the fopen() and fread() methods but it didn't work, and then I came around some article that had the code for internet-providers that used proxies. Since it's my case I tried the code below but it didn't give any response.

<?php
$opts = array('http' => array('proxy' => 'tcp://10.10.10.101:8080', 'request_fulluri' => true));
$context = stream_context_create ($opts);
$data = file_get_contents('http://www.php.net', false, $context);   
echo $data;
?>

Ok so I tried the code suggested, with the proper proxy values:

<?php


$url = 'http://www.php.net';
$proxy = '10.10.10.101:8080';
//$proxyauth = 'user:password';

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,$url);
curl_setopt($ch, CURLOPT_PROXY, $proxy);
//curl_setopt($ch, CURLOPT_PROXYUSERPWD, $proxyauth);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HEADER, 1);
$curl_scraped_page = curl_exec($ch);
curl_close($ch);

echo $curl_scraped_page;

But it gives me this error: HTTP/1.0 403 Forbidden Date: Mon, 02 Jul 2012 09:41:20 GMT Server: Apache Content-Type: text/plain Destination host forbidden

I don't get why it doesn't work, and how I could solve the problem.

解决方案

it's not really a cross domain problem because you are loading the data from the server not the browser.

To load a web page from PHP via a proxy - it's best to use cURL (a PHP http client: http://php.net/manual/en/book.curl.php).

Here is an example - it is taken from a similar question (http://stackoverflow.com/questions/5211887/how-to-use-curl-via-a-proxy):

<?php


$url = 'http://www.php.net';
$proxy = '10.10.10.101:8080';
//$proxyauth = 'user:password';

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,$url);
curl_setopt($ch, CURLOPT_PROXY, $proxy);
//curl_setopt($ch, CURLOPT_PROXYUSERPWD, $proxyauth);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HEADER, 1);
$curl_scraped_page = curl_exec($ch);
curl_close($ch);

echo $curl_scraped_page;

If your proxy needs authentication - you can set the $proxyauth var...

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