Get document count

# Collection::count

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Collection::count — Get document count

### Description

public function 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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