PHP - recursive function example

A recursive function is a function that calls itself.

    
    /**
     * Use with care!
     * Recursively delete a file or directory.
     * @param string $path
     */
    function recursiveRemove($path)
    {
        if (is_dir($path)) {
            foreach (scandir($path) as $entry) {
                if (!in_array($entry, ['.', '..'])) {
                    recursiveRemove($path . DIRECTORY_SEPARATOR . $entry); // calls itself
                }
            }
            rmdir($path);
        }
        if (is_file($path)) unlink($path);
    }
    
    recursiveRemove('/path/to/dir');