RecursiveCallbackFilterIterator::__construct()
(PHP 5 >= 5.4.0, PHP 7)
Create a RecursiveCallbackFilterIterator from a RecursiveIterator
说明
Creates a filtered iterator from a RecursiveIterator using the $callback to determine which items are accepted or rejected.
参数
- $iterator
The recursive iterator to be filtered.
- $callback
The callback, which should return
TRUE
to accept the current item orFALSE
otherwise. See Examples.May be any valid
callable value.
返回值
没有返回值。
参见
- RecursiveCallbackFilterIterator Examples
- RecursiveCallbackFilterIterator::getChildren() Return the inner iterator's children contained in a RecursiveCallbackFilterIterator
- RecursiveCallbackFilteriterator::hasChildren() Check whether the inner iterator's current element has children