PHP class to check, unify and get information related to a european VAT ID.

VatID.php

<?php

// Copyright 1012 Gerald Schittenhelm
// http://schittenhelm.at
// MIT License

class VatID {

	protected $findExp = '@vatResponseFormTable[^>]+>(.*?)</table>@s';
	protected $vatId = "";
	protected $valid = null;
	protected $company = "";
	protected $country = "";
	protected $address = "";

	protected function process() {
		$processed = true;
		$country = substr($this->vatId,0,2);
		$vatcode = substr($this->vatId,2);
		$html = @file_get_contents("http://ec.europa.eu/taxation_customs/vies/vatResponse.html?locale=en&memberStateCode=$country&number=$vatcode");
		if(preg_match($this->findExp,$html,$matches)) {
			$this->country = $country;
			$html = preg_replace("/\s+/"," ",trim($matches[1]));
			if(preg_match('@>Name<[^>]+>(.*?)</tr>@',$html,$matches)) {
				$this->company = trim(preg_replace("/<[^>]+>/","",preg_replace("@<br\s*/?>@","\n",$matches[1])));
			}else{
				$processed = false;
			}
			if(preg_match('@>Address<[^>]+>(.*?)</tr>@',$html,$matches)) {
				$this->address = trim(preg_replace("/<[^>]+>/","",preg_replace("@<br\s*/?>@","\n",$matches[1])));
			}else{
				$processed = false;
			}
			if(strstr($html,'"validStyle">Yes')) {
				$this->valid = true;
			}elseif(strstr($html,'"invalidStyle">No')) {
				$this->valid = false;
			}else{
				$processed = false;
			}
		}else{
			$processed = false;
		}
		if($processed) {
			if($this->valid) {
				echo "<small>(Valid)</small><br><br>";
				echo "<em>".$this->company."</em><br>";
				echo nl2br($this->address)."<br>";
				echo "<b>".$this->country."</b>";
			}else{
				echo "INVALID";
			}
		}else{
		
		}
	}

	public function setString($v) {
		$this->vatId = strtoupper(preg_replace("/[^A-Za-z0-9]+/s","",$v));
		$this->process();
	}

	public function getString() {
		return $this->vatId;
	}

	public function isValid() {
		return $this->valid;
	}

	public function getCountryCode() {
		return $this->country;
	}

	public function getCompany() {
		return $this->company;
	}

	public function getAddress() {
		return $this->address;
	}

}

?>