PHP | DirectoryIterator isDir() Function Last Updated : 07 Mar, 2024 Comments Improve Suggest changes Like Article Like Report The DirectoryIterator::isDir() function is an inbuilt function in PHP which is used to check the current DirectoryIterator item is a directory or not. Syntax: bool DirectoryIterator::isDir( void ) Parameters: This function does not accept any parameters. Return Value: This function returns TRUE if the directory exist, FALSE otherwise. Below programs illustrate the DirectoryIterator::isDir() function in PHP: Program 1: php <?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()) { $file = $directory->current(); // Display the filename and its size echo $file->getFilename() . " | Size: " . $directory->getSize() . "<br>"; } // Move to the next element $directory->next(); } ?> Output: . | Size: 4096 .. | Size: 12288 dashboard | Size: 4096 img | Size: 0 webalizer | Size: 0 xampp | Size: 0 Program 2: php <?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()) { $file = $directory->current(); // Display file name and last modified time echo $file->getFilename() . " | MTime: " . $directory->getMTime() . "<br>"; } // Move to the next element $directory->next(); } ?> Output: . | MTime: 1574654324 .. | MTime: 1574540515 dashboard | MTime: 1574350724 img | MTime: 1574350724 webalizer | MTime: 1574350718 xampp | MTime: 1574350724 Note: The output of this function depends on the content of server folder. 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