function beliefmedia_valid_acn($acn) {
 
		  $weights = array(8, 7, 6, 5, 4, 3, 2, 1, 0);
		 
		  /* Strip anything other than numbers */
		  $acn = preg_replace('/[^0-9]/', '', $acn);
		    
		  /* Check string lenth is 9 characters */
		  if (strlen($acn) != 9) return "false";
		 
		  /* Add the products */
		  $sum = 0; foreach (str_split($acn) as $key => $digit) {
		    $sum += $digit * $weights[$key];
		  }
		 
		  /* Get remainder */
		  $remainder = $sum % 10;
		 
		  /* Remainder compliment */
		  $complement = (string)(10 - $remainder);
		 
		  /* If complement is 10, set to 0 */
		  if ($complement === "10") $complement = "0";
		 
		 return ($acn[8] === $complement) ? true : false;
	}

function beliefmedia_valid_abn($abn) {
 
  $weights = array(10, 1, 3, 5, 7, 9, 11, 13, 15, 17, 19);
 
  /* Strip anything other than numbers */
  $abn = preg_replace('/[^0-9]/', '', $abn);
 
  /* 11 characters */
  if (strlen($abn) != 11){ return "false";}
 
  /* Subtract one from first digit */
  $abn[0] = ((int) $abn[0] - 1);
 
  /* Add the products */
  $sum = 0; foreach (str_split($abn) as $key => $digit) {
    $sum += ($digit * $weights[$key]);
  }
 
  if (($sum % 89) != 0) {
    return "false";
  }
    
 return "true";
}

function beliefmedia_jsonp_decode($jsonp, $assoc = true) {
  if ($jsonp[0] !== '[' && $jsonp[0] !== '{') {
    $jsonp = substr($jsonp, strpos($jsonp, '('));
  }
 
 return json_decode(trim($jsonp,'();'), $assoc);
}

function beliefmedia_abn_lookup($abn, $results = '20', $guid = 'ENTER YOUR GUID NUMBER HERE') {
  $curl = curl_init();
  curl_setopt($curl, CURLOPT_POST, 1);
  /* ABN or ACN */
  if (preg_match('#^[0-9\s?]+$#', $abn)) {
 
    /* Strip white space & get length */
    $abn = preg_replace('/\s+/', '', $abn);
    $abn_length = strlen($abn);
 
   if($abn_length == "9"){
       if (beliefmedia_valid_abn($abn) === false) return false;
        $url = 'https://abr.business.gov.au/json/AcnDetails.aspx?acn=' . $abn . '&callback=callback&guid=' . $guid;
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        $result = curl_exec($curl);
        $ddata = beliefmedia_jsonp_decode($result);
        return $ddata["AbnStatus"];
   }else if($abn_length == "11"){

       if (beliefmedia_valid_acn($abn) === false) return false;
       
       $url = 'https://abr.business.gov.au/json/AbnDetails.aspx?abn=' . $abn . '&callback=callback&guid=' . $guid;
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        $result = curl_exec($curl);
        $ddata = beliefmedia_jsonp_decode($result);
        return $ddata["AbnStatus"];
   }else{
       return false;
   }
  
 
  /* Else it's a text search */
  } elseif (preg_match('#(a-Z0-9\!\?\#\$\&\'\%\(\)\*\?\-/\:\;\=@,.\s\{\|\})*#', $abn)) {
 
    $data = @file_get_contents('https://abr.business.gov.au/json/MatchingNames.aspx?name=' . str_replace(' ', '+', $abn) . '&maxResults=' . $results . '&guid=' . $guid);
    $data = beliefmedia_jsonp_decode($data);
    $ddata = beliefmedia_jsonp_decode($result);
    return $ddata["AbnStatus"]; 
  } else {
 
    return false;
 
  }
 
}

$abn = '68076594119';
if(strlen($abn) != 9 && strlen($abn) != "11"){
    echo "false";
}else if(beliefmedia_abn_lookup($abn) == "Active"){
    echo "true";
}else{
    echo "false";
}