This script will redirect users from determined URL in accord with the your COUNTRY_NAME, COUNTRY_CODE, CITY (name), REGION_CODE or REGION_NAME returned by freegeoip.net webservice

redirect-site.php

<?php
/**
 * This script will redirect users from determined URL in accord with the your:
 * COUNTRY_NAME, COUNTRY_CODE, CITY (name), REGION_CODE or REGION_NAME returned by freegeoip.net webservice
 * @author Marcos Freitas - marcosfreitas[at]c4network[dot]com[dot]br
 * --
 * Thanks to freegeoip.net for the 'simple' webservice.
 */
			// Redirect function
			function Redirect($url, $permanent){
			    if (headers_sent() === false){
			        // moved permanently true or false. If false send code 303, 'see other'
			    	header('Location: ' . $url, true, ($permanent === true) ? 301 : 303);
			    }else{
			    	echo '<script> console.log("our ogres says: headers already send!");</script>';
			    }
			    exit();
			}

			// Creating a cookie to turn set language permissive on the options displayed to user in the site, as buttons or country flags.
            if(!isset($_COOKIE['away-from-here'])):
                setcookie('away-from-here',time(), time()+3600);
            endif;

			// This will allow you to view errors in the browser
			// set "display_errors" to 0 in production
			ini_set('display_errors',0);

			// Report all PHP errors (notices, errors, warnings, etc.)
			error_reporting(false);

			// Enable debug mode to show message info (true / false)
			$debug_mode = false;

			// url to redirect
			$redirect_to = 'http://c4network.com.br';

			// set the type of filter user. | lowercase or uppercase
			// COUNTRY_NAME, COUNTRY_CODE, CITY (name), REGION_CODE or REGION_NAME
			$filter_user_by = 'region_name';

			// set the default match value to the filter. | lowercase or uppercase
			// if this is satisfacted by conversation with the webservice, we will redirect the user to the user
			// EX.: If the ip of the user is from "maranhão", we will redirect he. Else, he still here.
			$filter_match = utf8_decode('maranhão');

			// User IP Address
			$user_ip = $_SERVER['REMOTE_ADDR'];

			// Format of response I need
			$format = 'json';

			// URI containing components necessary to make request
			$uri ="freegeoip.net/".$format."/".$user_ip;

			// Mechanism for transferring data
			$protocol = "http://";

			// Request with all components
			$request = $protocol . $uri;

			// Initialize the session by passing the request as a parameter
			$session = curl_init($request);

			// Set curl options by passing session and flags
			// CURLOPT_HEADER allows us to receive the HTTP header
			curl_setopt($session, CURLOPT_HEADER, false);

			// CURLOPT_RETURNTRANSFER will return the response
			curl_setopt($session, CURLOPT_RETURNTRANSFER, true);

			// Make the request
			$response = curl_exec($session);

			// Working with the response

			$decoded = json_decode($response, true);
			?>

			<?php

			if ( isset($decoded->response->status) && $decoded->response->status == 'ERROR'){
			    echo "<script>console.info('Oh no! We've found an error occured during curl exec. ". $decoded->response->errormessage."');</script>";
			}else{

				// options filter

				$country_code = strtolower(utf8_decode($decoded['country_code']));
				$country_name = strtolower(utf8_decode($decoded['country_name']));
				$city_name    = strtolower(utf8_decode($decoded['city']));
				$region_code  = strtolower(utf8_decode($decoded['region_code']));
				$region_name  = strtolower(utf8_decode($decoded['region_name']));

				$filter = array(
					'country_code' => $country_code,
					'country_name' => $country_name,
					'city_name'	   => $city_name,
					'city'	       => $city_name,
					'region_code'  => $region_code,
					'region_name'  => $region_name
					)
				;
?>
			<?php
			if ($debug_mode === true):
			?>
				<style>
				  .find-you-debug{font-weight: normal; font-family: helvetica, sans-serif; color: #fff !important; background-color: rgba(41, 128, 185, 1); padding: 10px;}
				</style>
				<div class="find-you-debug">
					<?php var_dump($filter); ?>
				</div><br>
			<?php
			endif;
			?>
<?php
				if(!empty($filter_user_by)){

					// search the match string to filter user in array of options
					// Ex.: search BR in the array, maybe return 'country_code' index else return 0 or FALSE
					$filter_match_result = array_search($filter_match, $filter);
					if(is_string($filter_match_result)){
						$filter_match_result = true;
					}else{
						$filter_match_result = false;
					}

				}else{

					// verify if the string match is identic to the value of the filter type
					// the match considers the location of the IP
					// if TRUE the ip location is identic as filter match, if FALSE the ip is from other location and not need to redirect
					$filter_match_result = ($filter[$filter_user_by] === $filter_match) ? true : false;
				}

				if ($debug_mode === true):
					echo "Filter Match Result: "; 			   var_dump($filter_match_result);
					echo " ### ".$filter_user_by.": "; var_dump($filter[$filter_user_by]);
					echo " ### Need to be: "; 			   var_dump($filter_match);
				endif;


				if($filter_match_result === false){
					 echo "<script>console.info('Oh no! the search in the filter returns no results');</script>";
				}

				if($filter_match_result === true && !isset($_COOKIE['away-from-here'])){
					echo 'redirect.';
					if(!empty($redirect_to))
						Redirect($redirect_to, false);
					exit;
				}

			}

			// Close the curl session
			curl_close($session);
?>