(PHP 5 >= 5.1.0, PHP 7)
RecursiveIterator::hasChildren — Returns if an iterator can be created for the current entry
public RecursiveIterator::hasChildren ( ) : bool
Returns if an iterator can be created for the current entry. RecursiveIterator::getChildren().
This function has no parameters.
Returns true if the current entry can be iterated over, otherwise returns false.
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https://www.php.net/manual/en/recursiveiterator.haschildren.php