CollectionFind::offset

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CollectionFind::offset — Skip given number of elements to be returned

Descrizione

public mysql_xdevapi\CollectionFind::offset(int $position): mysql_xdevapi\CollectionFind

Skip (offset) these number of elements that otherwise would be returned by the find operation. Use with the limit() method.

Defining an offset larger than the result set size results in an empty set.

Elenco dei parametri

position: Number of elements to skip for the limit() operation.

Valori restituiti

A CollectionFind object that can be used for additional processing.

Esempi

Example #1 mysql_xdevapi\CollectionFind::offset() 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()
  ->sort('age asc')
  ->offset(1)
  ->limit(1)
  ->execute();

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

Il precedente esempio visualizzerà qualcosa simile a:

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

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