PHP | DirectoryIterator __toString() Function

The DirectoryIterator::__toString() function is an inbuilt function in PHP which is used to return the file name of the current DirectoryIterator item.
Syntax: 

string DirectoryIterator::__toString( void )

Parameters: This function does not accept any parameters.
Return Value: This function returns the file name of the current DirectoryIterator item.
Below programs illustrate the DirectoryIterator::__toString() function in PHP:
Program 1:  

<?php

// Create a directory Iterator
$directory = new DirectoryIterator(dirname(__FILE__));

// Loop runs while directory element is valid
while ($directory->valid()) {
    
    // Display the filename in string format
    echo $directory->__toString() . "<br>";

    // Move to the next element
    $directory->next();
}

?>

Output: 

.
..
applications.html
bitnami.css
dashboard
favicon.ico
geeks.PNG
gfg.php
img
index.php
Sublime Text Build 3211 x64 Setup.exe
webalizer
xampp

Program 2:  

<?php

// Create a directory Iterator
$directory = new DirectoryIterator(dirname(__FILE__));

// Loop runs for each element of directory
foreach($directory as $dir) {
    
    // Display the key and filename
    echo $directory->key() . " => " .
    $directory->__toString() . "<br>";
}

?>

Output: 

0 => .
1 => ..
2 => applications.html
3 => bitnami.css
4 => dashboard
5 => favicon.ico
6 => geeks.PNG
7 => gfg.php
8 => img
9 => index.php
10 => Sublime Text Build 3211 x64 Setup.exe
11 => webalizer
12 => xampp

Note: The output of this function depends on the content of server folder.
Reference: https://www.php.net/manual/en/directoryiterator.tostring.php