The essence of the problem is this: a request comes in for a php file of the form http://mysite.ru/example.php#variable=1 ;
$_GET['variable'] does not work, because in the address bar is "#", not "?".
How to replace "#" with "?" ?
Google made it clear that perhaps this can be done in .htaccess, but it was not possible to make the correct entry in it.
# на ?on the client? The hash is not transmitted to the server. - vp_arth