VIES VAT Number Validator with Greek GEMI Integration

A PHP script that validates European VAT numbers using the EU's VIES SOAP API and provides additional business information from the Greek Business Registry (GEMI) for Greek companies.

Features

• Validates VAT numbers for all EU member states
• Displays company name and address information from VIES
• For Greek companies (country code EL):
  • Fetches additional business information from GEMI
  • Provides direct link to the company's registration details
  • Shows company status and type
• Clean, responsive interface built with Tailwind CSS
• Simple, self-contained implementation

Requirements

• PHP 7.4 or higher
• SOAP extension enabled in PHP
• cURL extension enabled (for GEMI API calls)
• Internet access to reach VIES and GEMI APIs

Usage

1. Select the country code from the dropdown (defaults to Greece/EL)
2. Enter the VAT number (without country prefix)
3. Click "Check VAT Number"
4. View validation results and company information

For Greek companies, you'll also see:

• GEMI registration number
• Company type
• Link to the official business portal record

Technical Details

The script performs the following operations:

1. Receives user input (country code and VAT number)
2. Calls the EU VIES SOAP API (checkVatService.wsdl)
3. Processes the response:
   • Validates the VAT number
   • Extracts company name and address
   • Splits name into trade name and business name (if separated by '||')
4. For Greek VAT numbers:
   • Calls the GEMI autocomplete API (publicity.businessportal.gr)
   • Extracts business registration details
   • Generates a direct link to the company's registration
5. Displays all information in a clean, responsive interface

Limitations

• VIES API may be occasionally unavailable
• GEMI information is only available for Greek companies
• Some older Greek VAT numbers might not be found in GEMI
• Results are only as accurate as the source databases

Contributing

Contributions are welcome! Please open an issue or pull request for any improvements.

Disclaimer

This script is provided as-is. The author is not responsible for any legal or financial consequences resulting from its use. Always verify critical VAT information through official channels.