MongoDB::listCollections

(PECL mongo >=0.9.0)

MongoDB::listCollections — Gets an array of all MongoCollections for this database

Description

public array MongoDB::listCollections ([ bool $includeSystemCollections = false ] )

Gets a list of all the collections in the database and returns them as an array of MongoCollection objects.

Parameters

includeSystemCollections

Include system collections.

Return Values

Returns an array of MongoCollection objects.

Changelog

Version	Description
1.3.0	Added the includeSystemCollections parameter.

Examples

Example #1 MongoDB::listCollections() example

The following example demonstrates running count on each collection in a database.

<?php

$m = new MongoClient();
$db = $m->selectDB("demo");

$list = $db->listCollections();
foreach ($list as $collection) {
    echo "amount of documents in $collection: ";
    echo $collection->count(), "\n";
}

?>

The above example will output something similar to:

...
amount of documents in demo.pubs: 4
amount of documents in demo.elephpants: 3
amount of documents in demo.cities: 22840
...

See Also

• MongoDB::getCollectionNames() - Get all collections from this database