PHP: Unlink All Files Within A Directory, and then Deleting That Directory

In PHP, removing a directory and all its contents requires unlinking all files first, then removing subdirectories recursively. PHP provides several approaches using functions like glob(), unlink(), and rmdir().

Note: File system operations require proper permissions. Ensure the PHP script has write access to the target directory.

Method 1: Recursive Directory Removal

This function recursively removes all files and subdirectories within a directory ?

<?php
function recursive_directory_removal($directory) {
    foreach(glob("{$directory}/*") as $file) {
        if(is_dir($file)) {
            recursive_directory_removal($file);
        } else {
            unlink($file);
        }
    }
    rmdir($directory);
}

// Usage
recursive_directory_removal('/path/to/directory');
echo "Directory removed successfully.";
?>

Method 2: Using array_walk() (PHP 5.3+)

A more concise approach using anonymous functions for file removal ?

<?php
$dir = '/path/to/directory';

// Remove all files in directory
array_walk(glob($dir . '/*'), function ($file) {
    if (is_file($file)) {
        unlink($file);
    }
});

// Remove the directory itself
rmdir($dir);
echo "Directory cleaned and removed.";
?>

Method 3: Using RecursiveDirectoryIterator

PHP's SPL provides a more robust solution for complex directory structures ?

<?php
function removeDirectory($path) {
    $iterator = new RecursiveDirectoryIterator($path, RecursiveDirectoryIterator::SKIP_DOTS);
    $files = new RecursiveIteratorIterator($iterator, RecursiveIteratorIterator::CHILD_FIRST);
    
    foreach($files as $file) {
        if ($file->isDir()) {
            rmdir($file->getRealPath());
        } else {
            unlink($file->getRealPath());
        }
    }
    rmdir($path);
}

// Usage
removeDirectory('/path/to/directory');
echo "Directory structure removed completely.";
?>

Comparison

Conclusion

Use RecursiveDirectoryIterator for complex directory structures, the recursive function for simple cases, and array_walk() for single-level directories. Always ensure proper error handling and permissions before deletion.