DirectoryIterator::valid

(PHP 5, PHP 7, PHP 8)

DirectoryIterator::valid — Check whether current DirectoryIterator position is a valid file

Descrizione

public DirectoryIterator::valid(): bool

Check whether current DirectoryIterator position is a valid file.

Elenco dei parametri

Questa funzione non contiene parametri.

Valori restituiti

Returns true if the position is valid, otherwise false

Esempi

Example #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

?>

Vedere anche:

DirectoryIterator::current() - Return the current DirectoryIterator item
DirectoryIterator::key() - Return the key for the current DirectoryIterator item
DirectoryIterator::next() - Move forward to next DirectoryIterator item
DirectoryIterator::rewind() - Rewind the DirectoryIterator back to the start
Iterator::valid() - Checks if current position is valid