How to close unclosed HTML Tags?

Question

Whenever we are fetching some user inputed content with some editing from the database or similar sources, we might retrieve the portion which only contains the opening tag

Answer 1

For HTML fragments, and working from KJS's answer I have had success with the following when the fragment has one root element:

$dom = new DOMDocument();
$dom->loadHTML($string);
$body = $dom->documentElement->firstChild->firstChild;
$string = $dom->saveHTML($body);

Without a root element this is possible (but seems to wrap only the first text child node in p tags in text

para

text):

$dom = new DOMDocument();
$dom->loadHTML($string);
$bodyChildNodes = $dom->documentElement->firstChild->childNodes;

$string = '';
foreach ($bodyChildNodes as $node){
   $string .= $dom->saveHTML($node);
}

Or better yet, from PHP >= 5.4 and libxml >= 2.7.8 (2.7.7 for LIBXML_HTML_NOIMPLIED):

$dom = new DOMDocument();

// Load with no html/body tags and do not add a default dtd
$dom->loadHTML($string, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);

$string = $dom->saveHTML();