MongoCursor::count

(PECL mongo >=0.9.2)

MongoCursor::count — Counts the number of results for this query

说明

public MongoCursor::count ([ bool $foundOnly = FALSE ] ) : int

This method does not affect the state of the cursor: if you haven't queried yet, you can still apply limits, skips, etc. If you have started iterating through results, it will not move the current position of the cursor. If you have exhausted the cursor, it will not reset it.

参数

foundOnly: Send cursor limit and skip information to the count function, if applicable.

返回值

The number of documents returned by this cursor's query.

范例

Example #1 MongoCursor::count() example


<?php

$collection->insert(array('x'=>1));
$collection->insert(array('x'=>2));
$collection->insert(array('x'=>3));

$cursor = $collection->find();

var_dump($cursor->count());
var_dump($cursor->count(true));

$cursor->limit(2);

var_dump($cursor->count());
var_dump($cursor->count(true));

?>

以上例程的输出类似于：

int(3)
int(3)
int(3)
int(2)

错误／异常

Throws MongoConnectionException if it cannot reach the database.

add a note

User Contributed Notes

There are no user contributed notes for this page.

官方地址：https://www.php.net/manual/en/mongocursor.count.php

有任何技术问题请点击这里网站运营推广招聘

IT PHP 编程语言 Linux 开发编程科技 Elasticsearch HTML/CSS/XML 网络数据库 JAVA 面试 NoSQL C/C++ Golang Git 算法操作系统正则表达式 Redis 互联网 MySql JavaScript 运维软件国际架构设计 Mac OS TCP/IP Excel Vim Windows Socket Oracle VR MongoDB Python 运营 MemCache 商业硬件电子娱乐设计 nginx 摄影游戏 WordPress HTTP 团建数码电器

php7 安装fileinfo扩展 preg_split — 通过一个正则表达式分隔字符串 php位值,解决 PHP 中 usort 在值相同时改变原始位置的问题 [PHP] inet_pton/inet_ntop IP地址转换函数 PHP 8.1 [鸟哥]PHP_INT_MIN 和 -9223372036854775808 ADORecordSet对象 adodb手册 opcache预加载 Composer的Packagist资源 array_multisort() 多字段排序 mysql面试题 PHP json解析（json_decode）页面工具 php中几种注释规范 PHPMailer设置utf8 PHPMailer字符集CharSet PHP mkdir()写出来的权限与mode值不符合 PHP5 扩展SOAP 调用 webservice php扩展开发 [原创]诡异的php-fpm超时问题利用php soap实现web service

略微加速

PHP官方手册 - 互联网笔记

MongoCursor::count

说明

参数

返回值

范例

错误／异常

User Contributed Notes