Php/docs/recursivecallbackfilteriterator.construct

• PHP Manual
• RecursiveCallbackFilterIterator
• Create a RecursiveCallbackFilterIterator from a RecursiveIterator

RecursiveCallbackFilterIterator::__construct

(PHP 5 >= 5.4.0, PHP 7)

RecursiveCallbackFilterIterator::__construct — Create a RecursiveCallbackFilterIterator from a RecursiveIterator

说明

public RecursiveCallbackFilterIterator::__construct ( RecursiveIterator $iterator , string $callback )

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 or false 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