Get document count

# Collection::count

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Collection::count — Get document count

### Description

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.

### Parameters

This function has no parameters.

### Return Values

The number of documents in the collection.

### Examples

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());
?>`

The above example will output:

    int(2)

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