PHP: ibase_set_event_handler

You Are At PHP: ibase_set_event_handler - Manual Area

If you are new to PHP or just need to refresh your skills, this is the place to start. This series of tutorials will give you the basic knowledge you will need to create a simple PHP website.

PHP is a reflective programming language originally designed for producing dynamic web pages.[1] PHP is used mainly in server-side scripting, but can be used from a command line interface or in standalone graphical applications. Textual User Interfaces can also be created using ncurses.

PHP Manual
Prev		Next

PHP Manual

ibase_set_event_handler

Description

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. 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.


<?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");
?>

The return value is an event resource. This resource can be used to free the event handler using ibase_free_event_handler().

Prev	Home	Next
ibase_service_detach	Up	ibase_timefmt