php 使用curl模拟ip和来源进行访问的实现方法

对于限制了ip和来源的网站，使用正常的访问方式是无法访问的。本文将介绍一种方法，使用php的curl类实现模拟ip和来源，访问那些限制了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 = '//www.jb51.net';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.example.com/server.php';$response = doCurl($url);echo $response;?>

返回 deny access

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$referer = '//www.jb51.net/';$response = doCurl($url, $data, $header, $referer, 5);echo $response;?>

返回 allow access

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