PHP | DirectoryIterator isReadable() Function Last Updated : 07 Mar, 2024 Comments Improve Suggest changes Like Article Like Report The DirectoryIterator::isReadable() function is an inbuilt function in PHP which is used to check the current DirectoryIterator item is readable or not. Syntax: bool DirectoryIterator::isReadable( void ) Parameters: This function does not accept any parameters. Return Value: This function returns TRUE if the file is readable, otherwise returns FALSE. Below programs illustrate the DirectoryIterator::isReadable() function in PHP: Program 1: php <?php // Create a directory Iterator $directory = new DirectoryIterator(dirname(__FILE__)); // Loop runs for each element of directory foreach($directory as $dir) { // Check for readable element if($dir->isReadable()) { // Display the filename echo $dir->getFilename() . "<br>"; } } ?> 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 <?php // Create a directory Iterator $directory = new DirectoryIterator(dirname(__FILE__)); // Loop runs while element is valid while ($directory->valid()) { // Check for readable element if($directory->isReadable()) { // Display the filename echo $directory->getFilename() . "<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 Note: The output of this function depends on the content of server folder. 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