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

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
  
// 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
  
// 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.

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




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