カールを使用して IP インスタンスをシミュレートする方法の詳細な説明

<?php 
$client_ip = getip();$referer = getreferer(); 
$allow_ip = &#39;192.168.1.100&#39;;$allow_referer = &#39;http://www.uxuew.cn&#39;; 
if($client_ip==$allow_ip && strpos($referer, $allow_referer)===0){  echo &#39;allow access&#39;;
}else{  echo &#39;deny access&#39;;
} 
 
// 获取访问者ipfunction getip(){  if(!empty($_SERVER[&#39;HTTP_CLIENT_IP&#39;])){$cip = $_SERVER[&#39;HTTP_CLIENT_IP&#39;];
  }elseif(!empty($_SERVER[&#39;HTTP_X_FORWARDED_FOR&#39;])){$cip = $_SERVER[&#39;HTTP_X_FORWARDED_FOR&#39;];
  }elseif(!empty($_SERVER[&#39;REMOTE_ADDR&#39;])){$cip = $_SERVER[&#39;REMOTE_ADDR&#39;];
  }else{$cip = &#39;&#39;;
  }  return $cip;
} 
// 获取访问者来源function getreferer(){  if(isset($_SERVER[&#39;HTTP_REFERER&#39;])){return $_SERVER[&#39;HTTP_REFERER&#39;];
  }  return &#39;&#39;;
} 
?>