« RecursiveIterator RecursiveIterator::hasChildren » PHP Manual RecursiveIterator Returns an iterator for the current entry RecursiveIterator::getChildren (PHP 5 >= 5.1.0, PHP 7) RecursiveIterator::getChildren — Returns an iterator for the current entry 说明 public RecursiveIterator::getChildren ( void ) : RecursiveIterator Returns an iterator for the current iterator entry. 参数 此函数没有参数。 返回值 An iterator for the current entry. 参见 RecursiveIterator::hasChildren() - Returns if an iterator can be created for the current entry