PHP: recursively delete directory with files and/or sub-directories in it

spldelete.php

function recursiveDelDirecoty( $dir, $delMe = FALSE ) {
    $dir = realpath( $dir );
    try{
        $it = new RecursiveIteratorIterator( new RecursiveDirectoryIterator( $dir, RecursiveDirectoryIterator::SKIP_DOTS ), RecursiveIteratorIterator::CHILD_FIRST );
        foreach( $it as $i ) {
            if ( $i->isDir() ) {
                rmdir( $i->getRealPath() );
                echo "删除". $i . "目录成功";
            }else{
                unlink( $i->getRealPath() );
                echo "删除". $i . "文件成功";
            }
        }
    }catch( Exception $e ) {
        echo $e->getMessage();
    }
    unset( $it );

    if ( $delMe == TRUE ) {
        rmdir( $dir );
        echo "删除". $dir . "目录成功";
    }
    
}