ibase_set_event_handler
Register a callback function to be called when events are posted
Description
resource ibase_set_event_handler(callable $event_handler
, string $event_name
, string ...$even_names
)
resource ibase_set_event_handler(
resource $connection
,
callable $event_handler
,
string $event_name
,
string ...$event_names
)
Parameters
-
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_name
-
An event name.
-
event_names
-
At most 15 events allowed.
Return Values
The return value is an event resource. This resource can be used to free
the event handler using ibase_free_event_handler.
Examples
Example #1 ibase_set_event_handler example
<?php
function 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");
?>
See Also
- ibase_free_event_handler
- ibase_wait_event