public function truncatehtml($html, $minimum)
{
$oldDocument = new \DomDocument();
$html = mb_convert_encoding($html, 'HTML-ENTITIES', 'UTF-8');
$oldDocument->loadHTML('<div>' . $html . '</div>');
// remove DOCTYPE, HTML and BODY tags
$oldDocument->removeChild($oldDocument->firstChild);
$oldDocument->replaceChild($oldDocument->firstChild->firstChild->firstChild, $oldDocument->firstChild);
$currentLength = 0;
// displayed text length (without markup)
$newDocument = new \DomDocument();
foreach ($oldDocument->documentElement->childNodes as $node) {
if ($node->nodeType != 3) {
// not text node
$imported = $newDocument->importNode($node, true);
$newDocument->appendChild($imported);
// copy original node to output document
$currentLength += strlen(html_entity_decode($imported->nodeValue));
if ($currentLength >= $minimum) {
// check if the minimum is reached
break;
}
}
}
$output = $newDocument->saveHTML();
return html_entity_decode($output);
}