Question

我在PHP中尝试了Mongo地理空间查询..我遇到了以下错误我已经写了2个PHP脚本..在我的 GeoPHP 从类创建对象并调用成员方法和我的另一个PHP脚本 class.master.php 写了一个类和成员方法

GeoPHP.php

<?php
require 'class.master.php';
$lat = 27.53864605; 
$long =  94.57980515; 
$distance = 5;

$geObj = new Geo;

$geObj->DbInst('dbname', 'collectionname');

$geObj->assignGeo($lat, $long, $distance);

$resultFld = array('id', 'name', 'stid', 'dis_id', 'ta_id');

$query = array('location'=>
                    array("\$near"=>
                            array("\$geometry"=>
                                array('type'=>'Point', 'coordinates'=>
                                    array($long, $lat)),"\$minDistance"=> 0, "\$maxDistance"=>$distance
                            )
                    )
        ); 

$result = $geObj->getResult($query, $resultFld);

?>

class.master.php

<?php

require 'vendor/autoload.php';

class Geo{

    private $latitude, $longitude, $distance;
    private $uri = "mongodb://localhost:27017";
    private $databaseName;
    private $db;

    public $collection;

    public function DbInst($dbname, $collName){
        // Mongo Connection Establish
        $con = new MongoDB\Client($this->uri);
        $this->databaseName = $dbname;
        $this->db = $con->selectDatabase($this->databaseName);

        $this->collection = $collName;
    }

    public function assignGeo($lat, $long, $dis){
        $this->latitude = $lat;
        $this->longitude = $long;
        $this->distance = $dis;
    }

    public function getResult($query, &$resFld){

        $cursor = $this->collection->find($query);

        return $cursor; 

    }
}
?>

上面的脚本返回错误

致命错误：在非对象中调用成员函数find（）第35行的D：\ xampp_1.8.3 \ htdocs \ GeoMongo \ class.master.php

如何解决此错误？

Answer 1

将您的收藏集设为：

$this->collection = $this->db->selectCollection($collName);

致命错误：在非对象上调用成员函数find（）？

1 个答案: