PHP Dokumentation: Function ibase-set-event-handler
12. Januar 2010 von werner
ibase_set_event_handler
(PHP 5)
ibase_set_event_handler — Register a callback function to be called when events are posted
Beschreibung
resource ibase_set_event_handler ( callback $event_handler , string $event_name1 [, string $event_name2 [, string $... ]] )
resource ibase_set_event_handler ( resource $connection , callback $event_handler , string $event_name1 [, string $event_name2 [, string $... ]] )
This function registers a PHP user function as event handler for the specified events.
Parameter-Liste
- event_handler
The callback is called with the event name and the link resource as arguments whenever one of the specified events is posted by the database.
The callback must return FALSE if the event handler should be canceled. Any other return value is ignored. This function accepts up to 15 event arguments.
- event_name1
An event name.
- event_name2
At most 15 events allowed.
Rückgabewerte
The return value is an event resource. This resource can be used to free the event handler using ibase_free_event_handler().
Beispiele
Beispiel #1 ibase_set_event_handler() example
<?phpfunction event_handler($event_name, $link)
{
if ($event_name == "NEW ORDER") {
// process new order
ibase_query($link, "UPDATE orders SET status='handled'");
} else if ($event_name == "DB_SHUTDOWN") {
// free event handler
return false;
}
}ibase_set_event_handler($link, "event_handler", "NEW_ORDER", "DB_SHUTDOWN");
?>Siehe auch
- ibase_free_event_handler() – Cancels a registered event handler
- ibase_wait_event() – Wait for an event to be posted by the database
Loading ...