noel.faux@med.monash.edu.au wrote:
> I have a small problem. Is it possible to cancel a running query when a
> person leave or pressed the stop button in my web page.
> ...
> Have tried
> <?php
> include "functions.php";
> $connection = pg_connect(host, dbname, user);
> ?>
> <html><body onunload(<?close_connection($connection)?>)>
...
This will never work, as you found. The Javascript action is client-side
and PHP is server-side.
Try using register_shutdown_function() to register a function which will
call pg_cancel_query(). As long as PHP isn't ignoring user aborts (see
ignore_user_abort()), your query will be cancelled when the user hits STOP.
Another way is to ignore user aborts, and while waiting for the
asynchronous query to finish, keep calling connection_aborted() to see if
you are still connected to the user; if not you cancel the query and exit.