MongoDB::getCollectionNames

(PECL mongo >=1.3.0)

MongoDB::getCollectionNames — Gets an array of names for all collections in this database

说明

public MongoDB::getCollectionNames ([ array $options = array() ] ) : array

Gets a list of all collections in the database and returns their names as an array of strings.

Note: This method will use the » listCollections database command when communicating with MongoDB 2.8+. For previous database versions, the method will query the special system.namespaces collection.

参数

options

An array of options for listing the collections. Currently available options include:

"filter"
Optional query criteria. If provided, this criteria will be used to filter the collections included in the result.
Relevant fields that may be queried include "name" (collection name as a string, without the database name prefix) and "options" (object containing options used to create the collection)..
Note: MongoDB 2.6 and earlier versions require the "name" criteria, if specified, to be a string value (i.e. equality match). This is because the driver must prefix the value with the database name in order to query the system.namespaces collection. Later versions of MongoDB do not have this limitation, as the driver will use the listCollections command.
"includeSystemCollections"
Boolean, defaults to FALSE. Determines whether system collections should be included in the result.

The following option may be used with MongoDB 2.8+:

"maxTimeMS"
Specifies a cumulative time limit in milliseconds for processing the operation on the server (does not include idle time). If the operation is not completed by the server within the timeout period, a MongoExecutionTimeoutException will be thrown.

返回值

Returns the collection names as an array of strings.

错误／异常

For MongoDB 2.6 and earlier, MongoException will be thrown if a non-string value was specified for the "filter" option's "name" criteria.

更新日志

版本	说明
1.6.0	Changed first parameter to be an array of options. Pre-1.6.0, the first parameter was a boolean indicating the "includeSystemCollections" option.

范例

Example #1 MongoDB::getCollectionNames() example


<?php
$m = new MongoClient();
$db = $m->selectDB("demo");
$collections = $db->getCollectionNames();

foreach ($collections as $collectionName) {
    echo "Found collection: ", $collectionName, "\n";
}
?>

以上例程的输出类似于：

...
Found collection: img
Found collection: beer
Found collection: collation
...

参见

MongoDB::listCollections() - Gets an array of MongoCollection objects for all collections in this database
MongoDB::getCollectionInfo() - Returns information about collections in this 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/mongodb.getcollectionnames.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 PHP5 扩展SOAP 调用 webservice PHPMailer设置utf8 PHPMailer字符集CharSet PHP mkdir()写出来的权限与mode值不符合 [原创]诡异的php-fpm超时问题 php扩展开发利用php soap实现web service

略微加速

PHP官方手册 - 互联网笔记

MongoDB::getCollectionNames

说明

参数

返回值

错误／异常

更新日志

范例

参见

User Contributed Notes