PHP - duda raspar datos con Simple HTML DOM Parser

<td class="Tabli">

<span class="s-left ">A</span>

<span class="s-left ">B</span>

<span class="s-left Tot-def">C</span>

</td>

$titles = $Result->find('span[class=s-left],span[class=s-left Tot-def]');

<script>

            var etiquetas = document.getElementsByClassName('s-left');

            var etiqueta = document.getElementsByClassName('Tot-def');

            alert('Primer span s-left: ' + etiquetas[0].innerHTML);

            alert('Segundo span s-left: ' + etiquetas[1].innerHTML);

            alert('Tercer span Tot-def: ' + etiqueta[0].innerHTML);

</script>

if ($titles->class=='s-left'){......}

if ($titles->class=='s-left Tot-def'){......}