PHP中的MongoDB - 如何将项插入集合中的数组？

Question

这一定很简单,但我似乎无法弄明白......假设我有一个集合users,这是该集合中的第一个项目:

{ 
    "_id" : ObjectId("4d8653c027d02a6437bc89ca"), 
    "name" : "Oscar Godson", 
    "email" : "oscargodson@xxx.com", 
    "password" : "xxxxxx", 
    "tasks" : [
    {
        "task" : "pick up stuff",
        "comment" : "the one stuff over there"
    },
    {
        "task" : "do more stuff",
        "comment" : "lots and lots of stuff"
    }
] }

然后我将如何使用MongoDB的PHP驱动程序向集合中此项中的"tasks"数组添加另一个"任务"

Answer 1

使用Mongo的$push操作:

$new_task = array(
  "task" => "do even more stuff",
  "comment" => "this is the new task added"
);
$collection->update(
  array("_id" => ObjectId("4d8653c027d02a6437bc89ca")), 
  array('$push' => array("tasks" => $new_task))
);