Are there plugins for creating referral links?

Question

WordPress

Are there any plugins similar to Order Master? Found only in quotations manually it is necessary to hand over links.
If anyone knows you need a solution that creates a personal account and creates a referral link itself

Answer 1

There are enough options . In general, this is done quite simply by hand
1. Register get variable ref

add_filter( 'query_vars', 'add_query_vars' );
function add_query_vars( $qvars ) {

  $qvars[] = 'ref';
  return $qvars;

}

2. In the personal account, create a field that can be copied. Write the user id in the get parameter 3. On init check the value of the get parameter, if the user is not authorized or his id differs from the get request, then write the setcookie() referral id
https://example.ru/?ref=48

function set_new_cookie() {
  if ( $ref = get_query_var( 'ref', false ) ) {
    //setting your cookies there
  }
}
add_action( 'init', 'set_new_cookie' );

4. On the user_register hook, check if the specified cookie exists and write it to the meta for further processing

add_action( 'user_register', 'referral_registration_save', 10, 1 );
function referral_registration_save( $user_id ) {

  if ( isset( $_COOKIE['ref'] ) )
    add_user_meta( $user_id, 'ref', $_COOKIE['ref'], true );
  
}