Deprecated: Optional parameter $keys declared before required parameter $cms_id is implicitly treated as a required parameter in /home/www/dev/work/class/blog/CmsKey.php on line 75

Deprecated: Creation of dynamic property lvesu\lvesu\controller\blog\php::$title is deprecated in /home/www/dev/work/website/lvesu/class/controller/blog/php.php on line 28

Deprecated: Creation of dynamic property lvesu\lvesu\controller\blog\php::$outlink is deprecated in /home/www/dev/work/website/lvesu/template/blog/cms/php.manual.tpl on line 2

Deprecated: Creation of dynamic property lvesu\lvesu\controller\blog\php::$status is deprecated in /home/www/dev/work/website/lvesu/template/blog/index.head.php on line 2
PHP - Manual: DirectoryIterator::valid - 互联网笔记

略微加速

PHP官方手册 - 互联网笔记

PHP - Manual: DirectoryIterator::valid

2025-05-16

DirectoryIterator::valid

(PHP 5, PHP 7, PHP 8)

DirectoryIterator::validCheck whether current DirectoryIterator position is a valid file

说明

public DirectoryIterator::valid(): bool

Check whether current DirectoryIterator position is a valid file.

参数

此函数没有参数。

返回值

Returns true if the position is valid, otherwise false

示例

示例 #1 A DirectoryIterator::valid() example

<?php
$iterator
= new DirectoryIterator(dirname(__FILE__));

// Loop to end of iterator
while($iterator->valid()) {
$iterator->next();
}

$iterator->valid(); // FALSE
$iterator->rewind();
$iterator->valid(); // TRUE

?>

参见

添加备注

用户贡献的备注

此页面尚无用户贡献的备注。

官方地址:https://www.php.net/manual/en/directoryiterator.valid.php

冷却塔厂家 广告
中文GPT4.0无需注册 广告
北京半月雨文化科技有限公司.版权所有 京ICP备12026184号-3