When your database name contains a "-" (e.g. database-name) you need to use a string instead.
<?php
$client = new MongoDB\Client("mongodb://ip_address:port");
$collection = $client->{'database-name'}->collection;
?>
When your database name contains a "-" (e.g. database-name) you need to use a string instead.
<?php
$client = new MongoDB\Client("mongodb://ip_address:port");
$collection = $client->{'database-name'}->collection;
?>