Google Calendar API - create event PHP

one text

Solution:

When you want to set to "free", please modify as follows.

From:

$googleEvent->setAttendees($googleEventAttendee);
$slotCalendarService->getCalendarService()->events->insert($slotCalendarService->getCurrentCalendarId(), $googleEvent);

To:

$googleEvent->setAttendees($googleEventAttendee);
$googleEvent->transparency = "transparent"; // Added
$slotCalendarService->getCalendarService()->events->insert($slotCalendarService->getCurrentCalendarId(), $googleEvent);

When you don't use $googleEvent->transparency = "transparent"; or you use $googleEvent->transparency = "opaque";, it's "busy".

Reference:

Events: insert

Source