略微加速

PHP官方手册 - 互联网笔记

PHP - Manual: DirectoryIterator::valid

2024-11-12

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

范例

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

add a noteadd a note

User Contributed Notes

There are no user contributed notes for this page.

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

北京半月雨文化科技有限公司.版权所有 京ICP备12026184号-3