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)
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