分享PHP获取客户端IP的几种不同方式

分享PHP获取客户端IP的几种不同方式

PHP获取IP的方法有许多种，我们今天向大家总结了六种方法，希望通过对这六种方法的学习，能够加深我们对PHP语言的进一步了解，巩固我们所掌握的知识。

PHP获取IP方法一：

function GetIP()
{
if (! empty ( $_SERVER [ "HTTP_CLIENT_IP" ]))
  $cip = $_SERVER [ "HTTP_CLIENT_IP" ];
else if (! empty ( $_SERVER [ "HTTP_X_FORWARDED_FOR" ]))
  $cip = $_SERVER [ "HTTP_X_FORWARDED_FOR" ];
else if (! empty ( $_SERVER [ "REMOTE_ADDR" ]))
  $cip = $_SERVER [ "REMOTE_ADDR" ];
else
  $cip = "无法获取！" ;
return $cip ;
}
echo "<br>" ;

PHP获取IP方法二：

error_reporting (E_ERROR | E_WARNING | E_PARSE);
if ( $HTTP_SERVER_VARS [ "HTTP_X_FORWARDED_FOR" ])
{
      $ip = $HTTP_SERVER_VARS [ "HTTP_X_FORWARDED_FOR" ];

}
elseif ( $HTTP_SERVER_VARS [ "HTTP_CLIENT_IP" ])
{
      $ip = $HTTP_SERVER_VARS [ "HTTP_CLIENT_IP" ];

}
elseif ( $HTTP_SERVER_VARS [ "REMOTE_ADDR" ])
{
      $ip = $HTTP_SERVER_VARS [ "REMOTE_ADDR" ];

}
elseif ( getenv ( "HTTP_X_FORWARDED_FOR" ))
{
      $ip = getenv ( "HTTP_X_FORWARDED_FOR" );

}
elseif ( getenv ( "HTTP_CLIENT_IP" ))
{
      $ip = getenv ( "HTTP_CLIENT_IP" );

}

elseif ( getenv ( "REMOTE_ADDR" ))
{
      $ip = getenv ( "REMOTE_ADDR" );

}

else
{
      $ip = "Unknown" ;

}
echo "你的IP地址是:" . $ip . "<br>" ;

PHP获取IP方法三：

$iipp = $_SERVER [ "REMOTE_ADDR" ];
echo $iipp ;
echo "<br>" ;

PHP获取IP方法四：

$user_IP = ( $_SERVER [ "HTTP_VIA" ]) ? $_SERVER [ "HTTP_X_FORWARDED_FOR" ] : $_SERVER [ "REMOTE_ADDR" ];
$user_IP = ( $user_IP ) ? $user_IP : $_SERVER [ "REMOTE_ADDR" ];
echo $user_IP . "<br>" ;

PHP获取IP方法五：

 

function get_real_ip()
{
      $ip =false;
      if (! empty ( $_SERVER [ "HTTP_CLIENT_IP" ]))
      {
           $ip = $_SERVER [ "HTTP_CLIENT_IP" ];
      }
      if (! empty ( $_SERVER [ 'HTTP_X_FORWARDED_FOR' ]))
      {
           $ips = explode ( ", " , $_SERVER [ 'HTTP_X_FORWARDED_FOR' ]);
           if ( $ip )
           {
                    array_unshift ( $ips , $ip ); $ip = FALSE;
           }
           for ( $i = 0; $i < count ( $ips ); $i ++)
           {
                    if (! eregi ( "^(10|172\.16|192\.168)\." , $ips [ $i ]))
                    {
                              $ip = $ips [ $i ];
                              break ;
                    }
           }
      }
      return ( $ip ? $ip : $_SERVER [ 'REMOTE_ADDR' ]);
}
echo get_real_ip();
echo "<br>" ;

PHP获取IP方法六：

 

if ( getenv ( 'HTTP_CLIENT_IP' ))
{
      $onlineip = getenv ( 'HTTP_CLIENT_IP' );
}
elseif ( getenv ( 'HTTP_X_FORWARDED_FOR' ))
{
      $onlineip = getenv ( 'HTTP_X_FORWARDED_FOR' );
}
elseif ( getenv ( 'REMOTE_ADDR' ))
{
      $onlineip = getenv ( 'REMOTE_ADDR' );
}
else
{
      $onlineip = $HTTP_SERVER_VARS [ 'REMOTE_ADDR' ];
}
echo $onlineip ;
echo "<br>" ;