/** Returns the cID for the page. If $page is an alias it returns the cID of the original page.
* @param Page $page The Page instance for which you want the original Page.
* @param int $aliasLevel [out] Will be set to: 0 if $page is not an alias, 1 if $page is an alias (but not the current page), 2 if $page is an alias and it's the current page.
* @return int Returns the cID of the original page.
*/
private static function getOriginal_cID($page, &$aliasLevel = null)
{
$cID = (int) $page->cID;
if ($page->isAlias()) {
$aliasOf = (int) $page->getCollectionPointerID();
if ($aliasOf != $cID) {
$aliasLevel = 1;
return $aliasOf;
} else {
// This happens if $page is an alias and it's the current page.
$aliasLevel = 2;
}
} else {
$aliasLevel = 0;
}
return $cID;
}
