php+mongodb를 사용하여 좌표가 지정된 다각형 영역 내에 있는지 확인하는 예

use testdb;

db.createUser( 
  { 
    "user":"root", 
    "pwd":"123456", 
    "roles":[{"role" : "readWrite", "db":"testdb"}] 
  } 
);

db.auth( 
  { 
    "user":"root", 
    "pwd":"123456" 
  } 
);

<?php
/**
 * MongoDB 多边形区域类，判断坐标是否在多边形区域内
 * Date:  2016-09-30
 * Author: fdipzone
 * Ver:  1.0
 *
 * Func:
 * public add      创建多边形区域
 * public checkInArea  判断坐标是否在多边形区域内
 * private connect    连接mongodb
 */
class MongoDBPolygons { // class start

  // mongo db 连接
  private $_conn = null;

  // mongo db
  private $_db = null;

  /**
   * 初始化
   * @param String $host  mongodb地址
   * @param String $user  用户名
   * @param String $passwd 密码
   * @param String $db   数据库
   */
  public function __construct($host, $user, $passwd, $db){
    $this->_conn = $this->connect($host, $user, $passwd);
    $this->_db = $db;
  }

  /**
   * 插入多边形数据
   * @param String $collname 表名称
   * @param Array $data   多边形坐标数据
   * @param Array $index  索引
   * @return Int
   */
  public function add($collname, $data, $index){

    // 创建索引
    $cmd = array(
      &#39;createIndexes&#39; => $collname,
      &#39;indexes&#39; => array(
        array(
          &#39;name&#39; => &#39;index&#39;,
          &#39;key&#39; => $index,
          &#39;ns&#39; => $this->_db.&#39;.&#39;.$collname
        )
      )
    );
    $command = new MongoDB\Driver\Command($cmd);
    $this->_conn->executeCommand($this->_db, $command);

    // 插入数据
    $bulk = new MongoDB\Driver\BulkWrite();
    $inserted = 0;

    if($data){
      foreach($data as $k=>$v){
        $bulk->insert($v);
      }
      $result = $this->_conn->executeBulkWrite($this->_db.&#39;.&#39;.$collname, $bulk);
      $inserted = $result->getInsertedCount();
    }

    return $inserted;
  }

  /**
   * 判断是否在多边形区域
   * @param String $collname 表名称
   * @param Decimal $longitude 经度
   * @param Decimal $latitude 纬度
   * @return Array
   */
  public function checkInArea($collname, $longitude, $latitude){
    $filter = array(
      &#39;polygons&#39; => array(
          &#39;$geoIntersects&#39; => array(
              &#39;$geometry&#39; => array(
                  &#39;type&#39; => &#39;Point&#39;,
                  &#39;coordinates&#39; => array(doubleval($longitude), doubleval($latitude))
              )
          )
      )
    );
    $options = array(&#39;limit&#39;=>1);
    $query = new MongoDB\Driver\Query($filter, $options);
    $cursor = $this->_conn->executeQuery($this->_db.&#39;.&#39;.$collname, $query);

    $result = array();
    if($cursor){
      foreach($cursor as $v){
        $result[] = $v;
      }
    }

    return $result? $result[0] : $result;
  }

  /**
   * 连接mongodb
   * @param String $host  数据库地址
   * @param String $user  用户名
   * @param String $passwd 密码
   * @return DBLink
   */
  private function connect($host, $user, $passwd){
    $server = &#39;mongodb://&#39;.$user.&#39;:&#39;.$passwd.&#39;@&#39;.$host;
    try{
      $conn = new MongoDB\Driver\Manager();
    } catch (MongoDB\Driver\Exception\ConnectionException $e){
      throw new ErrorException(&#39;Unable to connect to db server. Error:&#39; . $e->getMessage(), 31);
    }
    return $conn;
  }

} // class end
?>