PHP extension to mongodb (a small test)_javascript skills

There is a strong wind blowing outside today. Being able to write a blog in a warm hut is also a kind of happiness for Beidiao. Okay, without further ado, today I will mainly talk about PHP connection and operation of mongodb. If you have not read the content of the last two issues and do not know how to install the PHP extension to mongodb, please go back and read " PHP to mongodb" Extension (first acquaintance) " and "PHP extension to mongodb (newbie) ".

php connects mongodb

Copy code The code is as follows:

try {
$mongo = new Mongo("mongodb://username:password@127.0.0.1:27017/db1");
}catch(MongoConnectionException $e) {
print $e->getMessage() ;
exit;
}

Select database blog

Copy code The code is as follows :

$db = $mongo->blog;

Close database

Copy code The code is as follows:

$conn->close();

Select operation collection
$collection = $db-> ;users;
Insert data

Copy code The code is as follows:

$user = array ('name' => 'caleng', 'city' => 'beijing');
$collection->insert($user);

Modify data

Copy code The code is as follows:

$newdata = array('$set' => array(" city" => "shanghai"));
$collection->update(array("name" => "caleng"), $newdata);

Delete data

Copy code The code is as follows:

$collection->remove(array('name'= >'caleng'), array("justOne" => true));

Find data
Find a piece of data

Copy code The code is as follows:

$result= $collection->findone(array("name"=>"caleng"));

Query a list

Copy code The code is as follows:

// Find data whose creation time is greater than a certain time
$start = 1;
$counditionarray=array("ctime"=>array('$gt'=>1337184000));
$list_data = $this->game_handle->find($counditionarray);
$total = $this->game_handle->count($counditionarray);
$list_data->limit($count) ; //Data end position
$list_data->skip($start); //Data start position
var_dump($list_data);

in query

Copy code The code is as follows:

$cursor = $collection->find(array(
'name' => array('$in' => array('Joe', 'Wendy'))
));

group query

Copy code The code is as follows:

$collection->insert(array("category" => "fruit", "name" => "apple"));
$collection->insert(array(" category" => "fruit", "name" => "peach"));
$collection->insert(array("category" => "fruit", "name" => " banana"));
$collection->insert(array("category" => "veggie", "name" => "corn"));
$collection->insert(array ("category" => "veggie", "name" => "broccoli"));
$keys = array("category" => 1);
$initial = array("items " => array());
$reduce = "function (obj, prev) { prev.items.push(obj.name); }";
$g = $collection->group( $keys, $initial, $reduce);
echo json_encode($g['retval']);

Output result:

Copy code The code is as follows:

[{"category":"fruit","items":["apple","peach","banana "]},{"category":"veggie","items":["corn","broccoli"]}]

It can be seen that the result is a two-dimensional array

Copy code The code is as follows:

array(
0 => array("category" =>"fruit", "items"=>array("apple","peach","banana")),
1 => array("category" =>"veggie", "items "=>array("corn","broccoli"))
)

Here are some simple operations written here. If you want to use php to work better with mongodb, then Read the manual.