Laravel Discount Calculator

A simple and lightweight Laravel package to calculate discount percentage between original price and selling price.

This package provides a clean Facade-based API for calculating discounts easily inside Laravel applications.

Features

• Calculate discount percentage
• Simple Facade usage
• Laravel Service Provider integration
• PSR-4 Autoloading
• Lightweight and easy to use

Requirements

• PHP >= 8.1
• Laravel 9.x
• Laravel 10.x
• Laravel 11.x
• Laravel 12.x

Installation

Install the package via Composer:

composer require ekram/laravel-discount

Usage

Import the Facade:

use Ekram\Discount\Facades\Discount;

Calculate discount percentage:

$discount = Discount::calculate(280, 250);

echo $discount;

Output:

10.71

How It Works

Formula:

Discount Amount = Original Price - Selling Price

Discount Percentage =
(Discount Amount / Original Price) × 100

Example:

Original Price = 280

Selling Price = 250

Discount Amount = 30

(30 / 280) × 100

= 10.71%

Controller Example

<?php

namespace App\Http\Controllers;

use Ekram\Discount\Facades\Discount;

class DiscountController extends Controller
{
    public function calculate()
    {
        $originalPrice = 280;
        $sellingPrice = 250;

        $discount = Discount::calculate(
            $originalPrice,
            $sellingPrice
        );

        return response()->json([
            'original_price' => $originalPrice,
            'selling_price' => $sellingPrice,
            'discount_percentage' => $discount . '%'
        ]);
    }
}

Response:

{
    "original_price": 280,
    "selling_price": 250,
    "discount_percentage": "10.71%"
}

Facade

This package provides a simple Facade:

Discount::calculate($originalPrice, $sellingPrice);

Internally it resolves the Discount service from Laravel Service Container.

Service Container Binding

The package registers:

'discount'

inside Laravel Service Container.

Example:

app('discount')->calculate(280,250);

Validation

The package automatically handles invalid original price.

Example:

Discount::calculate(0, 100);

Returns:

0

Package Structure

laravel-discount/

├── src/
│   ├── Discount.php
│   ├── DiscountServiceProvider.php
│   └── Facades/
│       └── Discount.php
│
├── composer.json
└── README.md

Author

Md. Ekram Hossain

License

This package is open-sourced software licensed under the MIT license.