<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M256 8c137 0 248 111 248 248S393 504 256 504 8 393 8 256 119 8 256 8zm-27.5 379.5l123-123c4.7-4.7 4.7-12.3 0-17l-123-123c-7.6-7.6-20.5-2.2-20.5 8.5v246c0 10.7 12.9 16.1 20.5 8.5z"/></svg>
info at phpclasses dot org