略微加速

PHP官方手册 - 互联网笔记

PHP - Manual: Collection::count

2025-02-27

Collection::count

(No version information available, might only be in Git)

Collection::countGet document count

说明

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.

参数

此函数没有参数。

返回值

The number of documents in the collection.

示例

示例 #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());
?>

以上示例会输出:

int(2)
添加备注

用户贡献的备注

此页面尚无用户贡献的备注。

官方地址:https://www.php.net/manual/en/mysql-xdevapi-collection.count.php

北京半月雨文化科技有限公司.版权所有 京ICP备12026184号-3