Question

使用文件clearTestData.php从数据库中的集合中删除数据。它包含一个查询，该查询似乎表明结尾处的集合为空。当我检查具有相同查询的list.php时，不会删除任何内容。完整的mongo noob在这里，服务器由unversity提供。通过浏览器“ server .... / clearTestData.php”进行访问进行测试。

ClearTestData.php：

<?php
   // connect to mongodb
   $user = "muntean";
   require '/var/composer/vendor/autoload.php';
   $manager = new MongoDB\Driver\Manager("mongodb://localhost:27017");
   echo "Connection to database successfully. ";
   $collection = new MongoDB\Collection($manager, $user, 'testData');
   echo "deleting contents of collection user.testData. ";

   // now remove the document
   $collection->remove(array("node"=>"xyzWXX"),false);
   // db.testData.deleteMany({});
   echo "Documents deleted successfully.";

   $filter = [];
   $options = [];
   $query = new MongoDB\Driver\Query($filter, $options);
   $cursor = $manager->executeQuery("$user.testData", $query);
   print("The contents of the collection $user.testData are: ");
   print_r($cursor->toArray());
?>

list.php：

<html><body>
<?php
   $user = "muntean";
   require '/var/composer/vendor/autoload.php';
   $manager = new MongoDB\Driver\Manager("mongodb://localhost:27017");
   $collection = new MongoDB\Collection($manager, $user, 'testData');
   $filter = [];
   $options = [];
   $query = new MongoDB\Driver\Query($filter, $options);
   $cursor = $manager->executeQuery("$user.testData", $query);
   print("The contents of the collection $user.testData are:");
   print_r($cursor->toArray());
?>

浏览器中的输出列表：

集合muntean.testData的内容为：数组（[0] => stdClass对象（[_id] => MongoDB \ BSON \ ObjectId对象（[oid] => 5bd1c6871c37212c6c218b42）[node] => N13 [data ] => 10）[1] => stdClass对象（[_id] => MongoDB \ BSON \ ObjectId对象（[oid] => 5bd1cad41c37212c66789d33）[节点] => N13 [数据] => 10）[2] => stdClass对象（[_id] => MongoDB \ BSON \ ObjectId对象（[oid] => 5bd1cb861c37212c66789d34）[节点] => N13 [数据] => 10）[3] => stdClass对象（[_id] => MongoDB \ BSON \ ObjectId对象（[oid] => 5bd718621c3721165402d2f2）[节点] => N13 [数据] => 10）[4] => stdClass对象（[_id] => MongoDB \ BSON \ ObjectId对象（[oid] => 5bd7221f1c372116132eaf82）[节点] => N13 [数据] => 10）[5] => stdClass对象（[_id] => MongoDB \ BSON \ ObjectId对象（[oid] => 5bd722241c372116125a1fc2）[节点] => N13 [数据] ] => 10）[6] => stdClass对象（[_id] => MongoDB \ BSON \ ObjectId对象（[oid] => 5bd722581c3721165402d2f3）[node] => N13 [data] => 10）[7] => stdClass对象（[_ id] => MongoDB \ BSON \ ObjectId对象（[oid] => 5be304c21c3721252357e882）[node] => N13 [data] => 10）[8] => stdClass对象（[_id] => MongoDB \ BSON \ ObjectId对象（[oid] => 5be308b71c372124f456ccb2）[node] => N13 [data] => 10）[9] => stdClass对象（[_id] => MongoDB \ BSON \ ObjectId对象（[oid] => 5be340901c372124f456ccb3）[node ] => N13 [数据] => 10）[10] => stdClass对象（[_id] => MongoDB \ BSON \ ObjectId对象（[oid] => 5be373421c372124f10feee2）[节点] => N13 [数据] => 10 ）[11] => stdClass对象（[_id] => MongoDB \ BSON \ ObjectId对象（[oid] => 5c6d6a651c372113771565f2）[node] => N13 [data] => 10）[12] => stdClass对象（[ _id] => MongoDB \ BSON \ ObjectId对象（[oid] => 5c6d6a8a1c3721137b0653b2）[节点] => N13 [数据] => 10）[13] => stdClass对象（[_id] => MongoDB \ BSON \ ObjectId对象（[oid] => 5c6d6af51c372113791c77c2）[节点] => N13 [数据] => 53.374057769775-6.6027770042419））

在浏览器中清除输出：

成功连接到数据库。删除集合user.testData的内容。

用php清除mongoDB集合似乎无法永久起作用

0 个答案: