MongoDB 4 Quick Start Guide

Reading documents

You will note that PHPLIB closely mirrors the JavaScript API. In order to read (query) the database, these two methods are the ones that are used the most:

• MongoDB\Collection::find()
• MongoDB\Collection::findOne()

In addition, PHPLIB includes methods to find and then replace, update, or delete:

• MongoDB\Collection::findOneAndDelete()
• MongoDB\Collection::findOneAndReplace()
• MongoDB\Collection::findOneAndUpdate()

In this example, we wish to reproduce this JavaScript command using PHPLIB:

db.customers.find(     {country:/UK/,balance:{$lt:100}},     {_id:0,name:1,email:1,phone:1,balance:1} ).sort({balance:1});

First, we initialize the environment:

require __DIR__ . '/vendor/autoload.php'; use MongoDB\BSON\Regex; use Application\ {Client, ...