php根据ip获取地理位置

来源：互联网发布：装完ubuntu进不去win10 编辑：程序博客网时间：2024/06/11 05:12

有这样的需求，需要根据用户的IP地址，定位用户所在的城市。

本文记录性文章，无逻辑性。有这样需求的朋友，可以直接拷贝使用。直接上代码，不需赘述。

    <?php      header('Content-Type:text/html;Charset=utf-8');      function GetIp(){          $realip = '';          $unknown = 'unknown';          if (isset($_SERVER)){              if(isset($_SERVER['HTTP_X_FORWARDED_FOR']) && !empty($_SERVER['HTTP_X_FORWARDED_FOR']) && strcasecmp($_SERVER['HTTP_X_FORWARDED_FOR'], $unknown)){                  $arr = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);                  foreach($arr as $ip){                      $ip = trim($ip);                      if ($ip != 'unknown'){                          $realip = $ip;                          break;                      }                  }              }else if(isset($_SERVER['HTTP_CLIENT_IP']) && !empty($_SERVER['HTTP_CLIENT_IP']) && strcasecmp($_SERVER['HTTP_CLIENT_IP'], $unknown)){                  $realip = $_SERVER['HTTP_CLIENT_IP'];              }else if(isset($_SERVER['REMOTE_ADDR']) && !empty($_SERVER['REMOTE_ADDR']) && strcasecmp($_SERVER['REMOTE_ADDR'], $unknown)){                  $realip = $_SERVER['REMOTE_ADDR'];              }else{                  $realip = $unknown;              }          }else{              if(getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), $unknown)){                  $realip = getenv("HTTP_X_FORWARDED_FOR");              }else if(getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), $unknown)){                  $realip = getenv("HTTP_CLIENT_IP");              }else if(getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), $unknown)){                  $realip = getenv("REMOTE_ADDR");              }else{                  $realip = $unknown;              }          }          $realip = preg_match("/[\d\.]{7,15}/", $realip, $matches) ? $matches[0] : $unknown;          return $realip;      }            function GetIpLookup($ip = ''){          if(empty($ip)){              $ip = GetIp();          }          $res = @file_get_contents('http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=js&ip=' . $ip);          if(empty($res)){ return false; }          $jsonMatches = array();          preg_match('#\{.+?\}#', $res, $jsonMatches);          if(!isset($jsonMatches[0])){ return false; }          $json = json_decode($jsonMatches[0], true);          if(isset($json['ret']) && $json['ret'] == 1){              $json['ip'] = $ip;              unset($json['ret']);          }else{              return false;          }          return $json;      }                  $ipInfos = GetIpLookup('123.125.114.144'); //baidu.com IP地址      var_dump($ipInfos);

结果截图：

使用了新浪的开放API，执行速度还是非常赞的。

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