ibase_set_event_handler Register a callback function to be called when events are posted resourceibase_set_event_handler callbackevent_handler stringevent_name1 stringevent_name2 string... resourceibase_set_event_handler resourceconnection callbackevent_handler stringevent_name1 stringevent_name2 string... This function registers a PHP user function as event handler for the specified events. 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. ]]> The return value is an event resource. This resource can be used to free the event handler using ibase_free_event_handler. See also ibase_free_event_handler and ibase_wait_event.