QBCore Functions Library - QBCore Guide for FiveM

Introduction

This tutorial turns QBCore Functions Library into a clean, developer-friendly guide for QBCore/FiveM. You will follow a step-by-step flow, copy the relevant code patterns, and learn the “why” behind the setup.

Requirements

• QBCore installed and running on a dev server
• Basic Lua knowledge and comfort reading FiveM patterns
• A test workflow for iterating safely (dev server, not production)
• Optional: a code editor with Lua/FiveM helpers (VS Code recommended)

Step-by-Step Guide

Step 1: Getting QBCore Object

In this step, you will apply the getting qbcore object concept as a practical change: define the pieces, wire them together, then verify the behavior in your dev server.

Step 2: Player Functions

In this step, you will apply the player functions concept as a practical change: define the pieces, wire them together, then verify the behavior in your dev server.

Step 3: QBCore.Functions.GetPlayer(source)

In this step, you will apply the qbcore.functions.getplayer(source) concept as a practical change: define the pieces, wire them together, then verify the behavior in your dev server.

Step 4: QBCore.Functions.GetPlayerByCitizenId(citizenid)

In this step, you will apply the qbcore.functions.getplayerbycitizenid(citizenid) concept as a practical change: define the pieces, wire them together, then verify the behavior in your dev server.

Step 5: QBCore.Functions.GetOfflinePlayer(citizenid)

In this step, you will apply the qbcore.functions.getofflineplayer(citizenid) concept as a practical change: define the pieces, wire them together, then verify the behavior in your dev server.

Step 6: QBCore.Functions.GetPlayerByPhone(phone)

In this step, you will apply the qbcore.functions.getplayerbyphone(phone) concept as a practical change: define the pieces, wire them together, then verify the behavior in your dev server.

Step 7: QBCore.Functions.GetQBPlayers()

In this step, you will apply the qbcore.functions.getqbplayers() concept as a practical change: define the pieces, wire them together, then verify the behavior in your dev server.

Step 8: QBCore.Functions.CreateUseableItem(item, cb)

In this step, you will apply the qbcore.functions.createuseableitem(item, cb) concept as a practical change: define the pieces, wire them together, then verify the behavior in your dev server.

Code Example

local Player = QBCore.Functions.GetPlayer(source)
if Player then
    print('Player found:', Player.PlayerData.charinfo.firstname)
else
    print('Player not found')
end

Tips & Best Practices

• Keep authority on the server: validate inputs before money/database operations.
• Start with one resource/module at a time, then refactor after you verify it works.
• Use callbacks for request/response flows and events for push/UX updates.
• When you run loops, avoid freezes: always yield with Wait() (client/server) and cache hot values.