com_event_sink

(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)

com_event_sinkConnect events from a COM object to a PHP object

Description

com_event_sink(variant $variant, object $sink_object, array|string|null $sink_interface = null): bool

Instructs COM to sink events generated by variant into the PHP object sink_object.

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.

Parameters

variant

sink_object

sink_object 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.

sink_interface

PHP will attempt to use the default dispinterface type specified by the typelibrary associated with variant, but you may override this choice by setting sink_interface to the name of the dispinterface that you want to use.

Return Values

Returns true on success or false on failure.

Changelog

Version Description
8.0.0 sink_interface is nullable now.

Examples

Example #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");
$sink = new IEEventSinker();
com_event_sink($ie$sink"DWebBrowserEvents2");
$ie->Visible true;
$ie->Navigate("http://www.example.org");
while(!
$sink->terminated) {
  
com_message_pump(4000);
}
$ie null;
?>

Notes

Caution

Prior to PHP 8.0.0, calling exit() from any of the event handlers is not supported, and may cause PHP to hang. This can be worked around by throwing an exception from the event handler, catching the exception in the main code, and calling exit() from there.

See Also