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PHP | DirectoryIterator next() Function
  • Last Updated : 26 Nov, 2019

The DirectoryIterator::next() function is an inbuilt function in PHP which is used to move forward to the next DirectoryIterator item.

Syntax:

void DirectoryIterator::next( void )

Parameters: This function does not accept any parameters.

Return Value: This function does not return any value.

Below programs illustrate the DirectoryIterator::next() function in PHP:



Program 1:




<?php
  
// Create a directory Iterator
$directory = new DirectoryIterator(dirname(__FILE__));
  
// Loop runs while directory is valid
while ($directory->valid()) {
      
    // Check for directory
    if($directory->isDir()) {
  
        // Display key and file name
        echo $directory->key() . " => "
        $directory->getFilename() . "<br>";
    }
  
    // Move to the next element
    $directory->next();
}
  
?>

Output:

0 => .
1 => ..
4 => dashboard
8 => img
11 => webalizer
12 => xampp

Program 2:




<?php
  
// Create a directory Iterator
$directory = new DirectoryIterator(dirname(__FILE__));
  
// Loop runs while directory is valid
while ($directory->valid()) {
      
    // Check for file element
    if($directory->isFile()) {
  
        // Display the filename
        echo $directory->getFilename() . "<br>";
    }
  
    // Move to the next element
    $directory->next();
}
  
?>

Output:

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

Note: The output of this function depends on the content of server folder.

Reference: https://www.php.net/manual/en/directoryiterator.next.php




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