Directory operations in PHP - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to open a directory named 'files'.

PHP

<?php
$dir = [1]('files');
?>

Drag options to blanks, or click blank then click option'

Afopen

Breadfile

Copendir

Dfile_get_contents

Attempts:

3 left

💡 Hint

Common Mistakes

Using fopen which opens files, not directories.

Using readfile which reads file contents, not directories.

The opendir function opens a directory handle for reading its contents.

2fill in blank

medium

Complete the code to read an entry from the directory handle.

PHP

<?php
$dir = opendir('files');
$file = [1]($dir);
?>

Drag options to blanks, or click blank then click option'

Ascandir

Breaddir

Cfile_get_contents

Dfread

Attempts:

3 left

💡 Hint

Common Mistakes

Using fread which reads file content, not directory entries.

Using scandir which returns all entries at once, not one by one.

The readdir function reads the next entry from an open directory handle.

3fill in blank

hard

Fix the error in the code to properly close the directory handle.

PHP

<?php
$dir = opendir('files');
// some code
[1]($dir);
?>

Drag options to blanks, or click blank then click option'

Aclosedir

Bfclose

Cclosefile

Dclose

Attempts:

3 left

💡 Hint

Common Mistakes

Using fclose which closes file handles, not directories.

Using closefile which is not a valid PHP function.

The closedir function closes an open directory handle.

4fill in blank

hard

Fill both blanks to create an array of files in the 'docs' directory and check if it contains 'readme.txt'.

PHP

<?php
$files = [1]('docs');
if (in_array([2], $files)) {
    echo 'Found readme.txt';
}
?>

Drag options to blanks, or click blank then click option'

Ascandir

B'readme.txt'

C'README.TXT'

Dopendir

Attempts:

3 left

💡 Hint

Common Mistakes

Using opendir which returns a directory handle, not an array.

Checking for 'README.TXT' which is case sensitive and different.

scandir returns an array of files in a directory. We check if 'readme.txt' is in that array.

5fill in blank

hard

Fill all three blanks to loop through the 'images' directory and print each file name except '.' and '..'.

PHP

<?php
$dir = opendir('images');
while (($file = [1]($dir)) !== false) {
    if ($file != [2] && $file != [3]) {
        echo $file . "\n";
    }
}
closedir($dir);
?>

Drag options to blanks, or click blank then click option'

Areaddir

B'.'

C'..'

Dscandir

Attempts:

3 left

💡 Hint

Common Mistakes

Using scandir inside the loop which returns all files at once.

Not skipping '.' and '..' which are not actual files.

readdir reads each entry. We skip the special entries '.' and '..' which represent current and parent directories.