Send WhatsApp Group Messages from PHP - Complete Guide

Automate WhatsApp Group Messaging with PHP

Looking to integrate WhatsApp group messaging into your PHP applications? This guide walks you through sending WhatsApp group messages using PHP and the WhatsMate WA Gateway REST API. Perfect for PHP developers building websites, web applications, or any PHP-based system that needs WhatsApp group notifications.

📋 Prerequisites

Before you begin, ensure you have:

1. A WhatsMate WA Gateway Forever Green account - Required for group messaging API access
2. Group setup - Create a WhatsApp group with a unique name and add the gateway
3. PHP installed - Version 7.0 or higher with cURL extension enabled
4. Web server - Apache, Nginx, or any server that can execute PHP

⚠️ Important: You need a Forever Green account to send messages to WhatsApp groups. The gateway must be added to your WhatsApp group before it can send messages. Sign up for a Forever Green account to enable group messaging capabilities.

📝 Step-by-Step Implementation

Follow these steps to send your first WhatsApp group message from a PHP application:

1. Prepare Your WhatsApp Group

Before coding, set up your WhatsApp group:

1. Create a new group in WhatsApp with a unique name (the API won’t work if the name isn’t unique)
2. Add the secret gateway number to the group
3. Send a “Hi” message (or any message) in the group from your personal WhatsApp account - this helps the gateway silently recognize the new group in the background

2. Copy the PHP Template

Copy the following source code to your PHP script:

3. Configure Key Parameters

Customize these essential parameters in the PHP script:

• Line 2: Replace YOUR_INSTANCE_ID_HERE with your WhatsApp gateway instance ID
• Lines 3-4: Update YOUR_CLIENT_ID_HERE and YOUR_CLIENT_SECRET_HERE with your Forever Green Client ID and Secret
• Line 7: Specify the group admin’s phone number (including country code, e.g., 12025550108)
• Line 8: Provide your group name (must be unique)
• Line 9: Enter your message content

4. Execute the Script

1. Save the PHP file to your web server (e.g., send-whatsapp-group.php)
2. Visit the PHP page in your browser or execute via command line to send your message

🔧 Common Use Cases

This PHP integration is ideal for:

• Website notifications - Send automated alerts from contact forms or user actions
• E-commerce updates - Notify customer groups about orders, shipments, or promotions
• Content management systems - Integrate WhatsApp notifications into WordPress, Joomla, or custom CMS
• Web application alerts - Send group notifications from web-based business applications

🚀 Get Started Today

Ready to integrate WhatsApp group messaging into your PHP applications? You’ll need a Forever Green account to access the group messaging API. Sign up for a Forever Green account and start sending group messages within minutes!

Next Steps: Once you’ve mastered basic group text messaging, explore advanced features like sending images or documents to WhatsApp groups through the WhatsMate WA Gateway API documentation.