PHP Completely Delete A Directory Include Sub Directories And Files

<?php
	ini_set('display_errors', 1);
	ini_set('log_errors', 1);
 
	function delete_directory( $dirname ) {
		if ( is_dir( $dirname ) ) {
			$dir_handle = opendir( $dirname );
		}
		if ( !$dir_handle ) {
			return false;
		}
		while ( $file = readdir( $dir_handle ) ) {
			if ( $file != '.' && $file != '..' ) {
				if ( !is_dir( $dirname.'/'.$file ) ) {
					unlink( $dirname.'/'.$file );
				} else {
					delete_directory( $dirname.'/'.$file );
				}
			}
		}
		closedir( $dir_handle );
		rmdir( $dirname );
		return true;
	}
 
	delete_directory("D:/dev/web/htdocs/4rapiddev/demo/_tmp");
	delete_directory("D:/_tmp");
?>

<?php
	delete_directory("D:/dev/web/htdocs/4rapiddev/demo/_tmp");
	delete_directory("D:/_tmp");
?>