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

I have solution for php

#iU", $html, $result );
        $openedtags = $result[1];

        #put all closed tags into an array
        preg_match_all ( "##iU", $html, $result );
        $closedtags = $result[1];
        $len_opened = count ( $openedtags );

        # all tags are closed
        if( count ( $closedtags ) == $len_opened )
        {
            return $html;
        }
        $openedtags = array_reverse ( $openedtags );

        # close tags
        for( $i = 0; $i < $len_opened; $i++ )
        {
            if ( !in_array ( $openedtags[$i], $closedtags ) )
            {
                $html .= "";
            }
            else
            {
                unset ( $closedtags[array_search ( $openedtags[$i], $closedtags)] );
            }
        }
        return $html;
    }
    // close opened html tags
?>

You can use this function like

   test test"); ?>