PHP 8.1.0 RC 2 available for testing

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

?>

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