(PHP 5 >= 5.1.0, PHP 7)
RecursiveCachingIterator::hasChildren — Check whether the current element of the inner iterator has children
public RecursiveCachingIterator::hasChildren ( ) : bool
This function is currently not documented; only its argument list is available.
This function has no parameters.
true if the inner iterator has children, otherwise false
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https://www.php.net/manual/en/recursivecachingiterator.haschildren.php