Collection::count

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Collection::count — Get document count

Beschreibung

public mysql_xdevapi\Collection::count ( ) : int

This functionality is similar to a SELECT COUNT(*) SQL operation against the MySQL server for the current schema and collection. In other words, it counts the number of documents in the collection.

Parameter-Liste

Diese Funktion besitzt keine Parameter.

Rückgabewerte

The number of documents in the collection.

Beispiele

Beispiel #1 mysql_xdevapi\Collection::count() 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");

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

$result = $collection
  ->add(
  '{"name": "Bernie",
    "jobs": [
      {"title":"Cat Herder","Salary":42000}, 
      {"title":"Father","Salary":0}
    ],
    "hobbies": ["Sports","Making cupcakes"]}',
  '{"name": "Jane",
    "jobs": [
      {"title":"Scientist","Salary":18000}, 
      {"title":"Mother","Salary":0}
    ],
    "hobbies": ["Walking","Making pies"]}')
  ->execute();

var_dump($collection->count());
?>

Das oben gezeigte Beispiel erzeugt folgende Ausgabe:

int(2)