CachingIterator::valid

(PHP 5, PHP 7)

CachingIterator::valid — Check whether the current element is valid

说明

public CachingIterator::valid ( void ) : void
Warning

本函数还未编写文档，仅有参数列表。

Check whether the current element is valid.

参数

此函数没有参数。

返回值

成功时返回 TRUE， 或者在失败时返回 FALSE。

相关文章
php cachingiterator return the current elementphp cachingiterator check whether the inner iterator has a valid next elementphp cachingiterator return the key for the current elementphp cachingiterator return the string representation of the current elementphp cachingiterator check whether the current element is validphp directoryiterator check whether current directoryiterator position is a valid filephp filteriterator check whether the current element of the iterator is acceptablephp filteriterator check whether the current element is validphp gupnp 函数 check whether subscription is valid to the servicephp intliterator check if current position is validphp limititerator check whether the current element is validphp parentiterator check whether the inner iterator s current element has childrenphp recursivecachingiterator check whether the current element of the inner iterator has childrenphp recursivecallbackfilteriterator check whether the inner iterator s current element has childrenphp recursivefilteriterator check whether the inner iterator s current element has childrenphp recursiveiteratoriterator check whether the current position is validphp simplexmliterator check whether the current element is validphp swoole connection iterator check if current position is valid.php swoole table check current if the current row is valid.php weakmap returns whether the iterator is still on a valid map element
关注编程学问公众号