<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 384 512"><path d="M320 0H128L0 128v320c0 35.3 28.7 64 64 64h256c35.3 0 64-28.7 64-64V64c0-35.3-28.7-64-64-64zM160 160h-48V64h48v96zm80 0h-48V64h48v96zm80 0h-48V64h48v96z"/></svg>
info at phpclasses dot org