What's the purpose of HookRegistry::call

[edithlin]

Hi

I am quite new to PHP and now I am trying to add a new file upload page.

When I try to study the OCS codes, I found that HookRegistry::call must be excute first. May I know the purpose of this?

Could you ellobrate by this example?
uploadLayoutVersion function in classes\submission\trackDirector\TrackDirectorAction.inc.php
if ($paperFileManager->uploadedFileExists($fileName) && !HookRegistry::call('TrackDirectorAction::uploadLayoutVersion', array(&$submission))) {

Sorry for my silly question.

[asmecher]

Hi edithlin,

See http://pkp.sfu.ca/support/forum/viewtopic.php?f=3&t=4356&p=16968#p16968 -- please avoid duplicating threads, as it's easier for our team to manage.

Regards,
Alec Smecher
Public Knowledge Project Team