Strip Outer Tags of an HTML string in PHP

stripOuterTags.php

<?php
// See http://www.php.net/manual/en/class.domelement.php#101243
function stripOuterTags($html) {
    $doc = new \DOMDocument();
    $doc->loadHTML($html);
    $element = $doc->documentElement;
    $newhtml = '';

    foreach($element->childNodes as $node) {
        $newhtml .= $element->ownerDocument->saveHTML($node);
    }

    return $newhtml;
}
?>