Switch theme based on visitor location

gistfile1.txt

$themes_settings = [
    
    'default_theme' => 'newsup',
    'country_based_themes' => [
        "UK" => "blogus",
        "BD" => "electro",
    ]

];


function get_ip_location(){  
        
	 $client_ip  = @$_SERVER['HTTP_CLIENT_IP'];
	 $forward_ip = @$_SERVER['HTTP_X_FORWARDED_FOR'];
	 $remote_ip  = @$_SERVER['REMOTE_ADDR'];
	 $result  = array('country_code'=>'', 'country_name'=>'', 'region'=>'', 'city'=>'');

	 if(filter_var($client_ip, FILTER_VALIDATE_IP)){
		 $ip_address = $client_ip;
	 } elseif(filter_var($forward_ip, FILTER_VALIDATE_IP)){
		 $ip_address = $forward_ip;
	 } else{
		 $ip_address = $remote_ip;
	 }

	 $loc_data = @json_decode(file_get_contents("http://www.geoplugin.net/json.gp?ip=".$ip_address));    

	 if($loc_data && $loc_data->geoplugin_countryName != null){
		 $result['country_code'] = $loc_data->geoplugin_countryCode;
		 $result['country_name'] = $loc_data->geoplugin_countryName;
		 $result['region'] = $loc_data->geoplugin_region;
		 $result['city'] = $loc_data->geoplugin_city;
	 } else{
		 $result['country_code'] = 'US';
		 $result['country_name'] = 'United State';
	 }

	 return $result;
}

$visitor_data = get_ip_location();
$selected_theme = isset($themes_settings['default_theme']) ? $themes_settings['default_theme'] : null;

if(isset($themes_settings['country_based_themes']) && is_array($themes_settings['country_based_themes'])){

	foreach($themes_settings['country_based_themes'] as $country_code => $theme_slug){

		if($visitor_data['country_code'] == $country_code){
			$selected_theme = $theme_slug;
		}

	}

}

// Switch the theme
if($selected_theme){
	switch_theme($selected_theme);
}