我已经阅读了 mongoDB 文档，但是在哪里可以找到概述我正在尝试做的事情的示例。
我来的关闭是：
> t.insert({x: [1,2,3,4,3,2,3,4]})
> t.find()
{ "_id" : ObjectId("4bde2ad3755d00000000710e"), "x" : [ 1, 2, 3, 4, 3, 2, 3, 4 ] }
> t.update({x:3}, {$unset:{"x.$":1}})
> t.find()
{ "_id" : ObjectId("4bde2ad3755d00000000710e"), "x" : [ 1, 2, null, 4, 3, 2, 3, 4 ] }
但是，这不适用于我想做的事情，因为我的收藏看起来像
array (
'offers' =>
array (
0 =>
array (
'validto' => 'Thurs',
'validfrom' => 'Mon',
'percentage' => '0.05',
'cashback' => '2',
'minspend' => '40',
'status' => 'pending',
'_id' => '1347940686722',
),
1 =>
array (
'validto' => 'Thurs',
'validfrom' => 'Mon',
'percentage' => '0.06',
'cashback' => '3',
'minspend' => '50',
'status' => 'pending',
'_id' => '1347940705277',
),
2 =>
array (
'validto' => 'Sun',
'validfrom' => 'Fri',
'percentage' => '0.04',
'cashback' => '2',
'minspend' => '50',
'status' => 'pending',
'_id' => '1347940730663',
),
3 =>
array (
'validto' => 'Sun',
'validfrom' => 'Fri',
'percentage' => '0.05',
'cashback' => '3',
'minspend' => '60',
'status' => 'pending',
'_id' => '1347940743513',
),
4 =>
array (
'validto' => 'Sun',
'validfrom' => 'Fri',
'percentage' => '0.05',
'cashback' => '5',
'minspend' => '100',
'status' => 'pending',
'_id' => '1347940755230',
),
),
'store_id' => new MongoId("5046cd963cd202c49d3140e7"),
)
如果我想删除 3 数组（但这里的关键是我不知道我所拥有的 0-4 数组是否只是该子数组中的数据和集合行的 _id）。
这就是我的想法。然而我被卡住了。
$collection->update(array("store_id"=>$this->data['_id'], array("offers._id"=>1347940686722)), array('$unset'=>array("offers.$"=>1)));