使用curl模拟ip实例详解

对于限制了ip和来源的网站，使用正常的采集方式是不行的。本文将介绍一种方法，使用php的curl类实现模拟ip和来源，实现采集限制ip和来源的网站。

1.设置页面限制ip和来源访问

server.php

<?php 
$client_ip = getip();$referer = getreferer(); 
$allow_ip = '192.168.1.100';$allow_referer = 'http://www.uxuew.cn'; 
if($client_ip==$allow_ip && strpos($referer, $allow_referer)===0){  echo 'allow access';
}else{  echo 'deny access';
} 
 
// 获取访问者ipfunction getip(){  if(!empty($_SERVER['HTTP_CLIENT_IP'])){$cip = $_SERVER['HTTP_CLIENT_IP'];
  }elseif(!empty($_SERVER['HTTP_X_FORWARDED_FOR'])){$cip = $_SERVER['HTTP_X_FORWARDED_FOR'];
  }elseif(!empty($_SERVER['REMOTE_ADDR'])){$cip = $_SERVER['REMOTE_ADDR'];
  }else{$cip = '';
  }  return $cip;
} 
// 获取访问者来源function getreferer(){  if(isset($_SERVER['HTTP_REFERER'])){return $_SERVER['HTTP_REFERER'];
  }  return '';
} 
?>

2.使用curl正常访问

<?phpfunction doCurl($url, $data=array(), $header=array(), $timeout=30){ 
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL, $url);
  curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
  curl_setopt($ch, CURLOPT_POST, true);
  curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data));
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  curl_setopt($ch, CURLOPT_TIMEOUT, $timeout); 
  $response = curl_exec($ch); 
  if($error=curl_error($ch)){die($error);
  }
 
  curl_close($ch); 
  return $response;
 
} 
// 调用$url = 'http://www.uxuew.cn/server.php';$response = doCurl($url); 
echo $response;?>

3.使用curl模拟ip和来源进行访问

模拟来源

curl_setopt($ch, CURLOPT_REFERER, '来源');

模拟ip

curl_setopt($ch, CURLOPT_HTTPHEADER, array('CLIENT-IP: 模拟ip','X-FORWARDED-FOR: 模拟ip'));

完整代码如下：

<?phpfunction doCurl($url, $data=array(), $header=array(), $referer='', $timeout=30){ 
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL, $url);
  curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
  curl_setopt($ch, CURLOPT_POST, true);
  curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data));
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  curl_setopt($ch, CURLOPT_TIMEOUT, $timeout); 
  // 模拟来源
  curl_setopt($ch, CURLOPT_REFERER, $referer); 
  $response = curl_exec($ch); 
  if($error=curl_error($ch)){die($error);
  }
 
  curl_close($ch); 
  return $response;
 
} 
// 调用$url = 'http://www.example.com/server.php';$data = array(); 
// 设置IP$header = array(  'CLIENT-IP: 192.168.1.100',
  'X-FORWARDED-FOR: 192.168.1.100'); 
// 设置来源$referer = 'http://www.uxuew.cn/'; 
$response = doCurl($url, $data, $header, $referer, 5); 
echo $response;?>

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