DirectoryIterator::valid

(PHP 5)

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

설명

public bool DirectoryIterator::valid ( void )

Check whether current DirectoryIterator position is a valid file.

인수

이 함수는 인수가 없습니다.

반환값

Returns TRUE if the position is valid, otherwise FALSE

예제

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

?>

참고

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