How can PHP developers ensure that their directory counting scripts handle nested subdirectories correctly?

When counting directories in PHP, developers need to ensure that nested subdirectories are accounted for correctly. One way to handle this is by using recursive functions to traverse through all directories and subdirectories. This approach allows the script to count all directories regardless of their nesting level. 

function countDirectories($dir) {
    $count = 0;
    $files = scandir($dir);
    
    foreach($files as $file) {
        if ($file != '.' && $file != '..') {
            if (is_dir($dir . '/' . $file)) {
                $count++;
                $count += countDirectories($dir . '/' . $file);
            }
        }
    }
    
    return $count;
}

$directory = 'path/to/directory';
$totalDirectories = countDirectories($directory);
echo "Total directories: " . $totalDirectories;

Keywords

PHP directory counting nested subdirectories recursion file system operations

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