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    Collection::getOne

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    Collection::getOne — Get one document

    说明

    public mysql_xdevapi\Collection::getOne(string $id): Document

    Fetches one document from the collection.

    This is a shortcut for: Collection.find("_id = :id").bind("id", id).execute().fetchOne();

    参数

    id

    The document _id in the collection.

    返回值

    The collection object, or null if the _id does not match a document.

    示例

    示例 #1 mysql_xdevapi\Collection::getOne() example

    <?php
    $session     = mysql_xdevapi\getSession("mysqlx://user:password@localhost");

    $session->sql("DROP DATABASE IF EXISTS addressbook")->execute();
    $session->sql("CREATE DATABASE addressbook")->execute();

    $schema = $session->getSchema("addressbook");
    $collection = $schema->createCollection("people");

    $result = $collection->add('{"name": "Alfred", "age": 42, "job": "Butler"}')->execute();

    // A unique _id is (by default, and recommended) generated by MySQL Server
    // This retrieves the generated _id's; only one in this example, so $ids[0]
    $ids = $result->getGeneratedIds();
    $alfreds_id = $ids[0];

    // ...

    print_r($alfreds_id);
    print_r($collection->getOne($alfreds_id));
    ?>

    以上示例的输出类似于：

    00005b6b536100000000000000b1

Array
(
    [_id] => 00005b6b536100000000000000b1
    [age] => 42
    [job] => Butler
    [name] => Alfred
)
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