The FilterIterator class

(PHP 5 >= 5.1.0, PHP 7)

简介

这个抽象类的遍历并过滤出不想要的值.这个类应该被实现了迭代过滤器的类继承 FilterIterator::accept()方法必须被子类实现.

abstract FilterIterator extends IteratorIterator implements OuterIterator {

/* 方法 */

public abstract bool accept ( void )

public __construct ( Iterator $iterator )

public mixed current ( void )

public Iterator getInnerIterator ( void )

public mixed key ( void )

public void next ( void )

public void rewind ( void )

public bool valid ( void )

}

FilterIterator::accept — Check whether the current element of the iterator is acceptable
FilterIterator::__construct — Construct a filterIterator
FilterIterator::current — Get the current element value
FilterIterator::getInnerIterator — Get the inner iterator
FilterIterator::key — Get the current key
FilterIterator::next — Move the iterator forward
FilterIterator::rewind — Rewind the iterator
FilterIterator::valid — Check whether the current element is valid