(PHP 5 >= 5.1.0, PHP 7)
RecursiveFilterIterator::hasChildren — Check whether the inner iterator's current element has children
public RecursiveFilterIterator::hasChildren ( ) : bool
Check whether the inner iterator's current element has children.
This function has no parameters.
true
if the inner iterator has children, otherwise false
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https://www.php.net/manual/en/recursivefilteriterator.haschildren.php