DEV Community: Arshid

Direct Thermal Printing from Android Web Using PHP (ESC/POS Guide)

Arshid — Thu, 02 Apr 2026 13:04:58 +0000

Print receipts directly to any ESC/POS thermal printer from your web-based POS system — no SDK, no cloud, no hassle.

The Problem

Browsers can't talk to thermal printers. Bluetooth SDKs are buggy. Cloud printing is slow.

The Solution

POSBridge – a free Android app that acts as a bridge between your PHP web app and USB/Bluetooth/Network thermal printers.

⚡ How Direct Thermal Printing Works

PHP → Encode → Custom URL → Android → POSBridge → Printer

This method uses Android deep linking to pass print data.

🧾 PHP ESC/POS Receipt Example

Use this optimized PHP code:

<?php 

$data = "[C]<font size='big'><b>POSBRIDGE STORE</b></font>\n".
"[C]Calicut, Kerala\n".
"[C]Tel: +1 9605884551\n".
"[L]\n".
"[C]--------------------------------\n".
"[C]<b>INVOICE</b>\n".
"[C]--------------------------------\n".
"[L]Order No : 045\n".
"[L]Date     : 19-03-2026\n".
"[L]\n".

"[L]<b>Item</b>            [R]<b>Price</b>\n".
"[C]--------------------------------\n".

"[L]Beautiful Shirt     [R]$9.99\n".
"[L]  Size: S\n".
"[L]\n".

"[L]Awesome Hat         [R]$24.99\n".
"[L]  Size: 57/58\n".
"[L]\n".
"[C]--------------------------------\n".
"[R]Subtotal           $34.98\n".
"[R]Tax (5%)           $1.75\n".
"[C]--------------------------------\n".
"[R]<b>TOTAL</b>       <b>$36.73</b>\n".
"[C]================================\n".
"[L]\n".
"[L]<b>Customer</b>\n".
"[L]Arshid KV\n".
"[L]Calicut, Kerala\n".
"[L]Ph: +1-9605884551\n".
"[L]\n".
"[C]<qrcode size='25'>https://phpbolt.com</qrcode>\n".
"[L]\n".
"[C]Thank you for your purchase!\n".
"[C]Visit again\n";

// Compress print data
$compressed = gzencode($data, 9);

// Encode for URL (important for Android intent)
$encoded = rtrim(strtr(base64_encode($compressed), '+/', '-_'), '=');

// Trigger print via deep link
echo "<a href='pos-bridge://print?print-data=".$encoded."'>Print Receipt</a>";

Quick Start

Install – POSBridge on Google Play
Connect – Pair your thermal printer (USB/Bluetooth)
Copy – Use the PHP code above
Print – Click the link from any Android browser

Zentropy for Laravel: The High-Performance Redis Alternative for Scalable Apps

Arshid — Mon, 20 Oct 2025 11:14:59 +0000

Boost your Laravel app's speed and simplicity with Zentropy, a lightweight Redis alternative. No more setup headaches.

What is Zentropy?

Zentropy is a high-performance key-value store that can be used as a replacement for Redis. It supports both TCP connections with optional authentication and Unix socket connections, providing maximum flexibility for developers.

With the Zentropy Laravel wrapper, you can integrate it seamlessly into your Laravel applications, using familiar Facade syntax or dependency injection.

Install Zentropy

Download the latest release from the official GitHub repository:
https://github.com/mailmug/zentropy/releases
Extract the zip file for your operating system.
Run the binary from your terminal:
```
./zentropy
```
Run as a Service (Recommended for Production): For a production environment, you should configure it to run as a system service (e.g., using systemd on Linux) so it starts automatically on boot.

Getting Started with Zentropy Laravel

Install the package

composer require mailmug/zentropy-laravel

Publish the Configuration

php artisan vendor:publish --provider="MailMug\ZentropyLaravel\ZentropyWrapperServiceProvider" --tag="config"

Sample Controller

use MailMug\ZentropyLaravel\Facades\Zentropy;

class UserController extends Controller
{
    public function index(){
        Zentropy::set('users', User::get());
        // Set a value
        Zentropy::set('foo', 'bar');

        // Get a value
        $value = Zentropy::get('foo');

       // Delete a key
       Zentropy::delete('foo');


    }
}

✨ Introducing data-request: A Cleaner Way to Handle Form Data in Laravel

Arshid — Wed, 30 Jul 2025 09:20:58 +0000

Laravel developers love FormRequest classes for their clean validation approach. But if you've ever felt the boilerplate is too much—writing $request->validated() and manually assigning every input—you’re not alone.

The arshidkv12/data-request — a minimal Laravel package that lets you define validated fields as typed public properties and auto-fills them after validation.

✅ What Problem Does It Solve?

Normally, you'd do something like this:

public function store(Request $request)
{
    $validated = $request->validate([
        'name' => 'required|string',
        'email' => 'required|email',
    ]);

    $user = User::create([
        'name' => $validated['name'],
        'email' => $validated['email'],
    ]);
 }

Or using FormRequest:

class RegisterRequest extends FormRequest
{
    public string $name;
    public string $email;

    public function rules(): array
    {
        return [
            'name' => 'required|string',
            'email' => 'required|email',
        ];
    }
}

Then inside the controller:

public function store(Request $request)
{
    $user = User::create([
        'name' => $validated->name,
        'email' => $validated->email,
    ]);
 }

No more $request->validated() and manual unpacking. Your public properties are automatically assigned from validated input.

🔧 Installation

composer require arshidkv12/data-request

🛡️ Safety Features

✨ Uses Laravel’s native validation.

🧪 Fails fast if validation rules are missing.

✅ Type-safe properties prevent unexpected nulls or type mismatches.

📦 Use Cases

Perfect for:

API request classes
Form submissions
Admin panel inputs
Anywhere you want less repetitive validation-to-property code

🚀 Traitify – Native PHP Traits in C

Arshid — Sun, 29 Jun 2025 13:27:50 +0000

Traitify is a PHP extension that brings native, high-performance traits, such as Singleton, to PHP using C. It’s faster, lighter, and designed for real-world use in modern PHP apps.

🔧 Features

✅ Traitify\Singleton trait in C

✅ Automatic getInstance() handling

✅ Full __construct() support

🚀 Skips PHP overhead

🧠 Extensible: add Macroable, Singleton, etc.

📦 Install

git clone https://github.com/arshidkv12/traitify.git
cd traitify
phpize
./configure --enable-traitify
make && sudo make install

Enable in php.ini:

extension=traitify

✅ Why Use It?

Faster than PHP traits
Less memory usage
Clean API
Ideal
for performance-critical apps

🔗 GitHub: github.com/arshidkv12/traitify

Fork it. Test it. Extend it.

Saudi Riyal Font – Easily Display SAR Currency Symbol in HTML

Arshid — Wed, 26 Feb 2025 15:48:53 +0000

How to Use Saudi Riyal Font in HTML?
1️⃣ Download the Font from GitHub https://github.com/mailmug/saudi-riyal-font
2️⃣ Include it in your CSS:

@font-face {
    font-family: 'Arshid';
    src: url('arshid.ttf') format('truetype');
}

3️⃣ Apply the font in HTML:

<p class="text-green-600 font-semibold">
    <span style="font-family: 'Arshid';">$</span>10.00
</p>

🔹 Now, your $ sign will correctly display as Saudi Riyal (SAR) currency symbol!

Check out the project on GitHub:
👉 https://github.com/mailmug/saudi-riyal-font

Would love to hear your feedback! 💬

Build a Simple POS System with Laravel

Arshid — Fri, 14 Feb 2025 09:01:53 +0000

I built a POS system using Laravel! 🚀 It includes:
✅ Product & inventory management
✅ Sales tracking & receipts
✅ Responsive dashboard

Laravel’s Eloquent and Livewire make it easy! 💡

Planning to add barcode scanning & multi-store support next.

Check it out: https://github.com/mailmug/laravel-easy-pos

Live Demo: https://filament-pos.phpbolt.com/

Username: admin@admin.com

Password: pass@123

What features would you add? 🤔👇

MailMug.net: A Powerful Email Testing and Debugging Tool

Arshid — Sat, 01 Jul 2023 08:55:00 +0000

In today's digital age, email has become an indispensable tool for communication, particularly in professional settings. However, with the constant influx of messages and the need to juggle multiple accounts, managing emails efficiently can be a daunting task. This is where MailMug.net comes to the rescue. In this blog post, we will explore how MailMug.net is revolutionizing email management for busy professionals, offering a seamless experience and enhanced productivity.

YouTube

Streamlined Email Aggregation:

One of the standout features of MailMug.net is its ability to aggregate multiple email accounts into one unified platform. Whether you have accounts with Gmail, Outlook, Yahoo, or any other popular email service provider, MailMug.net allows you to access and manage all your emails from a single dashboard. This streamlines the process and eliminates the need to switch between multiple applications or tabs, saving valuable time and effort.

Intuitive User Interface:
MailMug.net prides itself on its intuitive user interface, designed to make email management a breeze. The platform offers a clean and clutter-free layout, with well-organized folders, labels, and filters. Navigating through your inbox, composing emails, and searching for specific messages is incredibly straightforward. The user-friendly interface ensures that even those less tech-savvy can quickly adapt to the platform and maximize their productivity.

Advanced Email Organization:
With a multitude of emails flooding our inboxes daily, organizing them efficiently is crucial for staying on top of tasks. MailMug.net offers a range of advanced email organization features that simplify the process. Users can create custom folders, apply filters, and set up rules to automatically categorize incoming emails. Additionally, the platform supports tagging and labeling, allowing you to mark messages for easy retrieval or assign priority levels to specific conversations.

Powerful Search Capabilities:
Finding a specific email buried deep within your inbox can be like finding a needle in a haystack. However, MailMug.net's powerful search capabilities eliminate this hassle. The platform employs advanced search algorithms that swiftly locate emails based on keywords, sender, recipient, or other criteria. With MailMug.net, you can bid farewell to endless scrolling and focus on the emails that matter most.

Enhanced Security and Privacy:
MailMug.net takes the security and privacy of its users seriously. The platform implements robust encryption protocols to safeguard your sensitive information and prevent unauthorized access. Additionally, MailMug.net offers features like two-factor authentication, email verification, and spam filters to ensure a secure email environment.

Seamless Integration with Productivity Tools:

To further enhance productivity, MailMug.net seamlessly integrates with popular productivity tools and software. Whether you use project management platforms like Trello or communication tools like Slack, MailMug.net allows you to connect these services and streamline your workflow. By centralizing your emails and collaborating within the same interface, you can minimize context-switching and optimize your efficiency.

Conclusion:

Email management doesn't have to be an arduous task that consumes your valuable time and energy. MailMug.net offers a comprehensive solution for busy professionals seeking to streamline their email workflow. With its unified platform, intuitive interface, advanced organization features, and robust security measures, MailMug.net empowers users to regain control over their inboxes and focus on what matters most. Try MailMug.net today and experience the convenience and productivity it brings to your professional life.

Mosquitto Auth Plugin - Rust

Arshid — Tue, 02 May 2023 11:03:54 +0000

We can easily configure the MySQL Mosquitto-auth plugin. It is open source dynamic security plugin. Developed with rust programming language.

Install the Mosquitto (MQTT) to Server Install the mosquitto from Ubuntu’s software repository.

Update the package information

sudo apt update

Install the mosquitto package.

sudo apt install -y mosquitto

Stop the mosquitto service

sudo systemctl stop mosquitto

Download mosquitto-auth.so file (Download)
Edit mosquitto.conf file

sudo vi /etc/mosquitto/mosquitto.conf

And add the following entries to the mosquitto.conf file.

plugin /path/to/mosquitto_auth.so
#listener 1883

Configure MySQL Database and Tables

Download the mosquitto.sql file and import it to your MySQL by PHPMyAdmin. Then create a .env file and add database credentials.

DB_HOST=localhost
DB_PORT=3306
DB_DATABASE=mosquitto
DB_USERNAME=root
DB_PASSWORD="Pass"

Move .env file to /

mv /path/to/.env /.env

Start the mosquitto server

sudo systemctl start mosquitto

Now it is ready to check username with password and permission.

WordPress Safe Email Testing with Postbox Plugin (Email Log)

Arshid — Tue, 02 May 2023 08:39:23 +0000

WordPress email testing with PostBox plugin. It saves WordPress email logs. You can view email details like subject, To, cc, Bcc, etc.

How to use the WordPress email log plugin?

Step 1: Go to wp-admin > plugins > then search PostBox Email Log

Step 2: Then install and activate the plugin.

Now it will automatically start to capture the email details that were sent from WordPress.

It will work like, WooCommerce Email Log or any other WordPress plugin.

How WordPress Email Logging is Working?

The WordPress email logging plugin is hooked to wp_mail. Then store information in the database. No need for any external fake SMTP server like Mailtrap.

Is it Work with SMTP WordPress Plugin?

Yes, It will work with WordPress SMTP plugins like SMTP7. Most of web servers disable the PHP email function. We can enable the email option by SMTP.