I have a page named aircraft-gallery and I am showing the data in this page from database its working fine.

I have another page named aircraft-gallery-class i am sending the data in ?id variable and receiving that data using GET['id'] than I sending this data to the database for results it is also working fine.

Here is my controller in WordPress function to get id

public function view_air_crafts_by_class(){
        //var_dump(get_query_var('id')); //working fine
        return $this->air_craft_model->get_air_craft_by_class($_GET['id']);

Now my question is simple I have this URL

http://example.com/aircraft-gallery/aircraft-gallery-class/?id=VIP Airliner

and I want this URL


I am using these lines of code in my functions.php file to convert the URL but it's not working, I don't know why

add_filter( 'query_vars', 'wpa5413_query_vars' );
function wpa5413_query_vars( $query_vars )
    $query_vars[] = 'id';
    return $query_vars;

add_action( 'init', 'wpa5413_init' );
function wpa5413_init()
        'top' );

I have already tried many codes suggested by the community but it does not work.

Any help would be greatly appreciated. I am clicking saving permalinks every time I update the functions.php file. Thanks

  • You have the right idea, although id is a very generic variable to use – Tom J Nowell Sep 5 '17 at 16:01

The problem is that id is no longer a $_GET variable, and is instead a WP query variable, so use the get_query_var function instead

  • I am new in WordPress that's why I am facing problem how can I use get_query_var could you please help me. – Komal khan Sep 5 '17 at 16:05
  • echo $_GET['id'] echo get_query_var( 'id' ) – Tom J Nowell Sep 5 '17 at 16:06
  • could you please solve my issue where I can put this get_query_var...? – Komal khan Sep 5 '17 at 16:11
  • @Komalkhan without seeing the code for your page it's not possible to say, but anywhere you see $_GET['id'] or $_REQUEST['id'] needs changing to get_query_var('id') – Tom J Nowell Sep 5 '17 at 21:39
  • here is my function in my controller public function view_air_crafts_by_class(){ //var_dump($one); //echo get_query_var('id'); //die(); return $this->air_craft_model->get_air_craft_by_class(get_query_var('id')); } – Komal khan Sep 6 '17 at 9:36

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