MongoCollection
PHP Manual

MongoCollection::findOne

(PECL mongo >=0.9.0)

MongoCollection::findOneQuerys this collection, returning a single element

Opis

public array MongoCollection::findOne ([ array $query = array() [, array $fields = array() ]] )

Parametry

query

The fields for which to search.

fields

Fields of the results to return.

Zwracane wartości

Returns record matching the search or NULL.

Błędy/Wyjątki

Throws MongoConnectionException if it cannot reach the database.

Przykłady

Przykład #1 MongoCollection::findOne document by its id.

This example demonstrates how to find a single document in a collection by its id.

<?php

$articles 
$mongo->my_db->articles;

$article $articles->findOne(array('_id' => new MongoId('47cc67093475061e3d9536d2')));

?>

Przykład #2 MongoCollection::findOne document by some condition.

This example demonstrates how to find a single document in a collection by some condition and limiting the returned fields.

<?php

$users 
$mongo->my_db->users;
$user $users->findOne(array('username' => 'jwage'), array('password'));
print_r($user);

?>

Powyższy przykład wyświetli coś podobnego do:

Array
(
    [_id] => MongoId Object
        (
        )

    [password] => test
)

Notice how even though the document does have a username field, we limited the results to only contain the password field.


MongoCollection
PHP Manual