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    CollectionFind::limit

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    CollectionFind::limit — Limit number of returned documents

    Description

    public mysql_xdevapi\CollectionFind::limit(int $rows): mysql_xdevapi\CollectionFind

    Set the maximum number of documents to return.

    Liste de paramètres

    rows

    Maximum number of documents.

    Valeurs de retour

    A CollectionFind object that can be used for additional processing; chain with the execute() method to return a DocResult object.

    Exemples

    Exemple #1 mysql_xdevapi\CollectionFind::limit() 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");
    $create = $schema->createCollection("people");
    $create
    ->add('{"name": "Alfred", "age": 18, "job": "Butler"}')
    ->    execute();
    $create
    ->add('{"name": "Reginald", "age": 42, "job": "Butler"}')
    ->    execute();


    // ...

    $collection = $schema->getCollection("people");

    $result = $collection
    ->find('job like :job and age > :age')
    ->    bind(['job' => 'Butler', 'age' => 16])
    ->    sort('age desc')
    ->    limit(1)
    ->    execute();

    var_dump($result->fetchAll());
    ?>

    Résultat de l'exemple ci-dessus est similaire à :

    array(1) {
  [0]=>
  array(4) {
    ["_id"]=>
    string(28) "00005b6b536100000000000000f3"
    ["age"]=>
    int(42)
    ["job"]=>
    string(6) "Butler"
    ["name"]=>
    string(8) "Reginald"
  }
}
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