Collection::count

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Collection::count — Get document count

説明

public mysql_xdevapi\Collection::count ( void ) : integer

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.

パラメータ

この関数にはパラメータはありません。

返り値

The number of documents in the collection.

例

例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());
?>

上の例の出力は以下となります。

int(2)