Undefined Variable trying to show GeoLocation on Magento 2 product page

Question

I am trying to look up the visitor's location and show this on the product page. It's going to be used to send them a personalised message based on location but currently, I am struggling to get it to show the current state.

If I put the code in a normal PHP file and load this it works fine but when I try this on a custom block in a .phthm file I get an error loading the product page saying undefined variable.

I can pull product details but not sure how I correctly define and show this on a product page.

Exception #0 (Exception): Notice: Undefined variable: ip in /home/staging/public_html/app/code/drumbeat/tabmodule/view/frontend/templates/shipping2.phtml on line 76

<?php 
function ip_info($ip = NULL, $purpose = "location", $deep_detect = TRUE) {
 $output = NULL;
 $state=NULL;
 $ip=NULL;
 global $ip;
 global $state;
 if (filter_var($ip, FILTER_VALIDATE_IP) === FALSE) {
 $ip = $_SERVER["REMOTE_ADDR"];
 if ($deep_detect) {
 if (filter_var(@$_SERVER['HTTP_X_FORWARDED_FOR'], FILTER_VALIDATE_IP))
 $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
 if (filter_var(@$_SERVER['HTTP_CLIENT_IP'], FILTER_VALIDATE_IP))
 $ip = $_SERVER['HTTP_CLIENT_IP'];
 }
 }
 $purpose = str_replace(array("name", "\n", "\t", " ", "-", "_"), NULL, strtolower(trim($purpose)));
 $support = array("country", "countrycode", "state", "region", "city", "location", "address");
 $continents = array(
 "AF" => "Africa",
 "AN" => "Antarctica",
 "AS" => "Asia",
 "EU" => "Europe",
 "OC" => "Australia (Oceania)",
 "NA" => "North America",
 "SA" => "South America"
 );
 if (filter_var($ip, FILTER_VALIDATE_IP) && in_array($purpose, $support)) {
 $ipdat = @json_decode(file_get_contents("http://www.geoplugin.net/json.gp?ip=" . $ip));
 if (@strlen(trim($ipdat->geoplugin_countryCode)) == 2) {
 switch ($purpose) {
 case "location":
 $output = array(
 "city" => @$ipdat->geoplugin_city,
 "state" => @$ipdat->geoplugin_regionName,
 "country" => @$ipdat->geoplugin_countryName,
 "country_code" => @$ipdat->geoplugin_countryCode,
 "continent" => @$continents[strtoupper($ipdat->geoplugin_continentCode)],
 "continent_code" => @$ipdat->geoplugin_continentCode
 );
 break;
 case "address":
 $address = array($ipdat->geoplugin_countryName);
 if (@strlen($ipdat->geoplugin_regionName) >= 1)
 $address[] = $ipdat->geoplugin_regionName;
 if (@strlen($ipdat->geoplugin_city) >= 1)
 $address[] = $ipdat->geoplugin_city;
 $output = implode(", ", array_reverse($address));
 break;
 case "city":
 $output = @$ipdat->geoplugin_city;
 break;
 case "state":
 $output = @$ipdat->geoplugin_regionName;
 break;
 case "region":
 $output = @$ipdat->geoplugin_regionName;
 break;
 case "country":
 $output = @$ipdat->geoplugin_countryName;
 break;
 case "countrycode":
 $output = @$ipdat->geoplugin_countryCode;
 break;
 }
 }
 }
 // return $output;
}
?>
<div>
 <p>Hello</p>
 <p><?php echo $ip('State'); ?></p>
 </div>

Answer 1

Instead of this method I used jQuery Instead as below,

In case helps anyone:

<script>
jQuery(document).ready(function($) {
$.get("https://ipinfo.io/json", function (response) {
 $("#ip").append("Your IP is: " + response.ip);
 var regionChk = response.region;
 switch (regionChk)
 {
 case "England":
 $("#region").append("100% FREE 1-Day Delivery " + response.region);
 break;
 case "Wyoming":
 $("#region").append("100% FREE 2-Day Delivery ");
 break;
 default:
 $("#region").append('100% FREE 3-Day US Shipping' + response.region);
 }
 }, "jsonp");
});
</script>