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# com_event_sink

(PHP 4 >= 4.2.3, PHP 5)

com_event_sink -- Connect events from a COM object to a PHP object

## Description

bool com_event_sink ( variant comobject, object sinkobject [, mixed sinkinterface] )

Instructs COM to sink events generated by `comobject` into the PHP object `sinkobject`. PHP will attempt to use the default dispinterface type specified by the typelibrary associated with `comobject`, but you may override this choice by setting `sinkinterface` to the name of the dispinterface that you want to use.

`sinkobject` should be an instance of a class with methods named after those of the desired dispinterface; you may use com_print_typeinfo() to help generate a template class for this purpose.

Be careful how you use this feature; if you are doing something similar to the example below, then it doesn't really make sense to run it in a web server context.

Exemplo 1. COM event sink example
`<?php class IEEventSinker { var $terminated = false; function ProgressChange($progress, $progressmax) { echo "Download progress: $progress / $progressmax\n"; } function DocumentComplete(&$dom, $url) { echo "Document $url complete\n"; } function OnQuit() { echo "Quit!\n"; $this->terminated = true; } } $ie = new COM("InternetExplorer.Application"); // note that you don't need the & for PHP 5! $sink =& new IEEventSinker(); com_event_sink($ie, $sink, "DWebBrowserEvents2"); $ie->Visible = true; $ie->Navigate("http://www.php.net"); while(!$sink->terminated) { com_message_pump(4000); } $ie = null; ?>`

See also com_print_typeinfo(), com_message_pump().

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