Domain WHOIS Checker - Avada Addon

A powerful WordPress plugin that provides domain WHOIS lookup functionality with seamless integration for the Avada theme builder. Check domain availability and view detailed WHOIS information directly from your WordPress site.

Features

• Comprehensive WHOIS Support: Supports 200+ domain extensions including popular TLDs and country-specific domains
• Multiple Query Methods: Supports both socket-based and HTTP-based WHOIS lookups
• Avada Theme Integration: Native support for Avada Fusion Builder with custom element
• Shortcode Support: Easy-to-use shortcodes for any theme or page builder
• Caching System: Built-in caching to improve performance and reduce server load
• Responsive Design: Mobile-friendly interface that works on all devices
• Admin Interface: Comprehensive settings panel with testing tools
• Customizable Styling: Multiple style options and customization settings
• Real-time Validation: Client-side domain validation for better user experience

Supported Domain Extensions

The plugin supports a wide range of domain extensions including:

• Popular TLDs: .com, .net, .org, .info, .biz, .name, .mobi
• New gTLDs: .app, .blog, .shop, .tech, .online, .site, .store, .cloud
• Country TLDs: .uk, .de, .fr, .ca, .au, .br, .in, .cn, .jp, and many more
• Specialized TLDs: .edu, .gov, .mil, .museum, .aero, .coop

Installation

Manual Installation

1. Download the plugin files and upload them to your /wp-content/plugins/domain-whois-checker/ directory
2. Activate the plugin through the 'Plugins' menu in WordPress
3. Go to Settings > WHOIS Checker to configure the plugin

Via WordPress Admin

1. Go to Plugins > Add New
2. Upload the plugin zip file
3. Activate the plugin
4. Configure settings under Settings > WHOIS Checker

Configuration

After installation, configure the plugin:

1. Connection Timeout: Set the maximum wait time for WHOIS server responses (5-120 seconds)
2. Cache Results: Enable/disable result caching for better performance
3. Cache Duration: How long to cache results (300-86400 seconds)

Usage

Shortcode Usage

Use the [domain_whois_checker] shortcode to display a domain checker form:

[domain_whois_checker]

Shortcode Parameters

• placeholder: Placeholder text for input field (default: "Enter domain name...")
• button_text: Text for check button (default: "Check Domain")
• show_details: Show detailed WHOIS information (default: false)
• style: Visual style - default, modern, minimal, rounded

Examples

// Basic usage
[domain_whois_checker]

// With custom text
[domain_whois_checker placeholder="Check your domain" button_text="Search"]

// With detailed information
[domain_whois_checker show_details="true"]

// Modern style with details
[domain_whois_checker style="modern" show_details="true" button_text="Check Availability"]

Avada Integration

If you're using the Avada theme, the plugin adds a custom Fusion Builder element:

1. Edit your page with Fusion Builder
2. Click "Add Element"
3. Search for "Domain WHOIS Checker"
4. Configure the element options:
   • Placeholder text
   • Button text and colors
   • Show detailed information
   • Style options
   • Border radius settings
   • Custom CSS classes and IDs

PHP Integration

For developers, you can use the plugin's classes directly:

// Check a domain
$checker = new DWC_WHOIS_Checker();
$result = $checker->check_domain('example.com');

// Get detailed domain info
$info = $checker->get_domain_info('example.com');

// Widget-style output
echo DWC_Shortcode::render_widget(array(
    'title' => 'Check Domain',
    'placeholder' => 'Enter domain...',
    'show_details' => true
));

Styling and Customization

CSS Classes

The plugin uses the following CSS classes for styling:

• .dwc-checker-container: Main container
• .dwc-domain-input: Domain input field
• .dwc-check-button: Check button
• .dwc-result: Result container
• .dwc-available: Available domain styling
• .dwc-not-available: Unavailable domain styling
• .dwc-loading: Loading state

Style Variations

Four built-in styles are available:

1. Default: Standard form styling
2. Modern: Rounded container with shadow
3. Minimal: Clean, borderless design
4. Rounded: Fully rounded elements

Custom CSS

Add custom styles to your theme's CSS:

/* Custom button colors */
.dwc-check-button {
    background-color: #your-color !important;
}

/* Custom input styling */
.dwc-domain-input {
    border-color: #your-color;
}

/* Custom result colors */
.dwc-available {
    color: #your-green-color;
}

.dwc-not-available {
    color: #your-red-color;
}

WHOIS Server Configuration

The plugin includes configuration for 200+ WHOIS servers. The system automatically:

1. Detects the domain extension
2. Finds the appropriate WHOIS server
3. Performs the lookup using socket or HTTP connection
4. Parses the response for availability status

Supported Query Types

• Socket connections: Direct TCP connections to WHOIS servers (port 43)
• HTTP queries: Web-based WHOIS lookups for registries that provide web interfaces

Caching System

The plugin includes an intelligent caching system:

• Transient-based: Uses WordPress transients for storage
• Configurable duration: Set cache lifetime from 5 minutes to 24 hours
• Automatic cleanup: WordPress handles cache expiration
• Per-domain caching: Each domain is cached separately

Performance Optimization

• Efficient lookups: Direct socket connections when possible
• Connection pooling: Reuses connections for multiple queries
• Timeout handling: Prevents hanging requests
• Error handling: Graceful failure with informative messages

Troubleshooting

Common Issues

1. Connection timeouts: Increase timeout setting or check server firewall
2. Socket errors: Some servers may require HTTP queries instead
3. Cache issues: Clear WordPress cache or disable caching temporarily
4. Extension not supported: Check if the domain extension is in the configuration

Debug Mode

To enable debug mode, add this to your wp-config.php:

define('WP_DEBUG', true);
define('WP_DEBUG_LOG', true);

Check /wp-content/debug.log for error messages.

Security

• Input sanitization: All inputs are properly sanitized
• Nonce verification: AJAX requests use WordPress nonces
• Capability checks: Admin functions require proper permissions
• SQL injection prevention: Uses WordPress database methods

Browser Support

• Chrome 60+
• Firefox 55+
• Safari 11+
• Edge 16+
• Internet Explorer 11+

Requirements

• WordPress 5.0 or higher
• PHP 7.0 or higher
• cURL extension (for HTTP queries)
• Socket extension (for socket queries)
• Avada theme (optional, for Fusion Builder integration)

Changelog

Version 1.0.0

• Initial release
• Support for 200+ domain extensions
• Avada Fusion Builder integration
• Shortcode functionality
• Admin interface
• Caching system
• Multiple styling options

Support

For support and feature requests:

1. Check the documentation first
2. Test with the admin testing tool
3. Check WordPress debug logs
4. Contact plugin support with specific error messages

License

This plugin is licensed under the GPL v2 or later.

Credits

• WHOIS server data compiled from various registry sources
• Icons and design inspired by WordPress admin interface
• Built with WordPress best practices and standards