PHP5中文手册·Register a callback function to be called when events are posted -- 追寻梦想＞编程乐园＞PHP 编程

说明

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.

参数

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

...

返回值

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

范例

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");
?>


	PHP5中文手册 ibase_service_detach ibase_timefmt Firebird/InterBase PHP Manual ibase_set_event_handler (PHP 5) ibase_set_event_handler — Register a callback function to be called when events are posted 说明 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 `$...` ]] ) This function registers a PHP user function as event handler for the specified events. 参数 `event_handler` The callback is called with the event name and the link resource as arguments whenever one of the specified events is posted by the database. The callback must return `FALSE` if the event handler should be canceled. Any other return value is ignored. This function accepts up to 15 event arguments. `event_name1` An event name. `event_name2` `...` 返回值 The return value is an event resource. This resource can be used to free the event handler using ibase_free_event_handler(). 范例 Example#1 ibase_set_event_handler() example `<?php function event_handler($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"); ?>` 参见 ibase_free_event_handler() ibase_wait_event() ibase_service_detach ibase_timefmt Firebird/InterBase PHP Manual

ibase_set_event_handler

说明

参数

返回值

范例

参见