ibase_free_event_handler
(PHP 5, PHP 7 < 7.4.0)
ibase_free_event_handler — Cancels a registered event handler
說明
ibase_free_event_handler(resource
$event): bool
This function causes the registered event handler specified by
event to be cancelled. The callback function will
no longer be called for the events it was registered to handle.
返回值
成功時返回 true， 或者在失敗時返回 false。