How To Use PHP Directory Functions Example

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Hi guys,

Today i will explained how to use php directory functions. This example is so easy to use in php.

This functions is provided to the default php language. So you can easily to use in your php code. Today i will explaind chdir(),chroot(),closedir(),dir(),getcwd() to explainded.

So let's start to the example.

chdir() Function

The chdir() function changes the current directory.

<?php
    echo getcwd() . "<br>";
    // Change directory
    chdir("images");
    echo getcwd();
?>

Output

/home/php
/home/php/images

chroot() Function

The chroot() function changes the root directory of the current process to directory, and changes the current working directory to "/".

Note: This function is not implemented on Windows platforms

<?php
    chroot("/path/to/chroot/");
    echo getcwd();
?>

Output

/

closedir() Function closedir() function closes a directory handling.

<?php
    directory = "/images/";
    if (is_dir(directory)){
      if ($dh = opendir(directory)){
        while (($file = readdir($dh)) !== false){
          echo "filename:" . $file . "<br>";
        }
        closedir($dh);
      }
    }
?>

Output

filename: cat.gif
filename: dog.gif

dir() Function

The dir() function returns an instance of the Directory class. This function is used to read a directory.

*The given directory is opened

*The two properties handle and path of dir() are available

*Both handle and path properties have three methods: read(), rewind(), and close()

<?php
    $d = dir(getcwd());
    echo "Handle: " . $d->handle . "<br>";
    echo "Path: " . $d->path . "<br>";
    while (($file = $d->read()) !== false){
      echo "filename: " . $file . "<br>";
    }
    $d->close();
?>

Output

Handle: Resource id #2
Path: /etc/php
filename: .
filename: ..
filename: ajax.gif
filename: books.xml
filename: cdcatalog.xml
filename: cd_catalog.xml
filename: default.asp
filename: demo_array.asp
filename: demo_array.htm

getcwd() Function getcwd() function returns the current working directory

<?php    
    echo getcwd();
?>

Output

/home/php

Now you can check your own.