Collection::count
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Collection::count — Get document count
Descrierea
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.
Parametri
Această funcție nu are parametri.
Valorile întoarse
The number of documents in the collection.
Exemple
Example #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());
?>
Exemplul de mai sus va afișa:
int(2)
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