|
protected detectLoop ( |
||
| $parent | the parent item | |
| $child | the child item to be added to the hierarchy | |
| 리턴 | boolean | whether a loop exists |
protected function detectLoop($parent, $child)
{
if ($child->name === $parent->name) {
return true;
}
foreach ($this->getChildren($child->name) as $grandchild) {
if ($this->detectLoop($parent, $grandchild)) {
return true;
}
}
return false;
}