(PHP 5 >= 5.1.0, PHP 7)
ParentIterator::hasChildren — Check whether the inner iterator's current element has children
public ParentIterator::hasChildren ( ) : bool
Check whether the inner iterator's current element has children.
This function is currently not documented; only its argument list is available.
This function has no parameters.
Returns true on success or false on failure.
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https://www.php.net/manual/en/parentiterator.haschildren.php