Hello Reader's If you want to make an function which truncate all the html contents and ignore them then you can uset the Sren Lvborg printTruncated function making it UTF-8 (Needs mbstring) function. It's example as below:-

/* Truncate HTML, close opened tags
*
* @param int, maxlength of the string
* @param string, html 
* @return $html
*/

function htmlTruncate($maxLength, $html)
{
    mb_internal_encoding("UTF-8");
    $printedLength = 0;
    $position = 0;
    $tags = array();
    $out = "";


while ($printedLength < $maxLength _ mb_preg_match('{</?([a-z]+)[^>]*>|_[a-zA-Z0-9]+;}', $html, $match, PREG_OFFSET_CAPTURE, $position))
{
    list($tag, $tagPosition) = $match[0];

// Print text leading up to the tag.
    $str = mb_substr($html, $position, $tagPosition - $position);
    if ($printedLength + mb_strlen($str) > $maxLength)
    {
        $out .= mb_substr($str, 0, $maxLength - $printedLength);
        $printedLength = $maxLength;
        break;
    }

$out .= $str;
    $printedLength += mb_strlen($str);

if ($tag[0] == '&')
    {
        // Handle the entity.
        $out .= $tag;
        $printedLength++;
    }
    else
    {
        // Handle the tag.
        $tagName = $match[1][0];
        if ($tag[1] == '/')
        {
// This is a closing tag.

$openingTag = array_pop($tags);
            assert($openingTag == $tagName); // check that tags are properly nested.

$out .= $tag;
        }
        else if ($tag[mb_strlen($tag) - 2] == '/')
        {
// Self-closing tag.
            $out .= $tag;
        }
        else
        {
            // Opening tag.
            $out .= $tag;
            $tags[] = $tagName;
        }
    }

// Continue after the tag.
    $position = $tagPosition + mb_strlen($tag)