PHP | DirectoryIterator valid() Function
Last Updated :
26 Nov, 2019
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The DirectoryIterator::valid() function is an inbuilt function in PHP which is used to check the current DirectoryIterator position is a valid file or not.
Syntax:
php
Output:
php
Output:
bool DirectoryIterator::valid( void )Parameters: This function does not accept any parameters. Return Value: This function returns TRUE if the position is valid, otherwise returns FALSE. Below programs illustrate the DirectoryIterator::valid() function in PHP: Program 1:
<?php
// Create a directory Iterator
$directory = new DirectoryIterator(dirname(__FILE__));
// Move to the third element
$directory->seek(2);
// Check the validity of directory element
if($directory->valid()) {
// Display the filename
echo $directory->getFilename();
}
?>
applications.htmlProgram 2:
<?php
// Create a directory Iterator
$directory = new DirectoryIterator(dirname(__FILE__));
// Loop runs while directory is valid
while ($directory->valid()) {
// Check for directory element
if($directory->isDir()) {
// Display the key and filename
echo $directory->key() . " => " .
$directory->getFilename() . "<br>";
}
// Move to the next element
$directory->next();
}
?>
0 => . 1 => .. 4 => dashboard 8 => img 11 => webalizer 12 => xamppNote: The output of this function depends on the content of server folder. Reference: https://www.php.net/manual/en/directoryiterator.valid.php
