/-----------------------------Command--------------------------------------------------/

 1 //manager mænɪdʒə主教练
 2 //bulk baok大部分
 3 $manager = new MongoDB\Driver\Manager('mongodb://localhost:27017');
 4 $command =new MongoDB\Driver\Command([ 
 5     'delete'=>'goods',// collection表名；次参数数组代码参考下方官方
 6     'deletes'=> [
 7        ['q'=>['price'=>"120"],'limit'=>0]
 8     ]
 9 ]);
10 $cursor = $manager->executeCommand('ecshop', $command);
11 var_dump($cursor->toArray()[0]);
12

Command资料

用法：https://blog.csdn.net/qq_33028267/article/details/88547137 
官方：https://docs.mongodb.com/manual/reference/command/delete/
大神：http://www.php.cn/php-weizijiaocheng-405982.html

$manager = new MongoDB\Driver\Manager('mongodb://localhost:27017');

$command1 = new MongoDB\Driver\Command([//查出某一个
    "find"=>"goods",
    "filter"=>["price"=>"130"]
]);


$command2= new MongoDB\Driver\Command([//查出price字段的
    "distinct"=>"goods",
    "key"=>"price",
    "query"=>["price"=>"120","price"=>"130"]
]);


$command31 =new MongoDB\Driver\Command([ //插入
    'insert'=>'goods',// collection表名
    'documents'=> [
        ['_id'=>time(), 'name'=> "栗子", 'price'=> "130" ],
        ['_id'=>time(), 'name'=> "核桃", 'price'=> "2250" ],
    ]
]);

$command3 =new MongoDB\Driver\Command([  //插入
    'insert'=>'goods',// collection表名
    'documents'=> [
        [ 'name'=> "栗子", 'price'=> "130" ],
        [ 'name'=> "核桃", 'price'=> "2250" ],
    ]
]);

/------------------BulkWrite------------------------------------------------/
13 $manager = new MongoDB\Driver\Manager("mongodb://localhost:27017");
14 $bulk = new MongoDB\Driver\BulkWrite();
15 //$bulk->delete([]);
16 //$bulk->insert(['x' => 7, 'name'=>'菜鸟教程', 'url' => 'http://www.runoob.com']);
17 //$bulk->insert(['x' => 2, 'name'=>'
18 //$bulk->insert(['x' => 3, 'name'=>'taobao', 'url' => 'http://www.taobao.com']);
19 //$bulk->update(['x'=>2],['$set'=>['name'=>'谷歌']]);
20  $bulk->insert(['x' => 6, 'title'=>'淘宝', 'url' => 'www.taobao.com']);
21 $manager>executeBulkWrite('mongo.user',$bulk);