Category:Helper -> Community | Category:Helper -> Text
Suppose you want to make a page that shows the first 500 words of your text, and your text contains tags that change the layout (e.g. <b>, <i>,...). If the word_limiter function cuts off your text before the closing tags, the rest of your page will be affected, e.g. by being printed bold.
So an auto-tag-closing word_limiter() function would be helpful. Here’s how to do it. In the text_helper file, enter this function:
function closeTags($string)
{
// coded by Constantin Gross <connum at googlemail dot com> / 3rd of June, 2006
// (Tiny little change by Sarre a.k.a. Thijsvdv)
$donotclose=array('br','img','input'); //Tags that are not to be closed
//prepare vars and arrays
$tagstoclose='';
$tags=array();
//put all opened tags into an array /<(([A-Z]|[a-z]).*)(( )|(>))/isU
preg_match_all("/<(([A-Z]|[a-z]).*)(( )|(>))/isU",$string,$result);
$openedtags=$result[1];
// Next line escaped by Sarre, otherwise the order will be wrong
// $openedtags=array_reverse($openedtags);
//put all closed tags into an array
preg_match_all("/<\/(([A-Z]|[a-z]).*)(( )|(>))/isU",$string,$result2);
$closedtags=$result2[1];
//look up which tags still have to be closed and put them in an array
for ($i=0;$i<count($openedtags);$i++) {
if (in_array($openedtags[$i],$closedtags)) { unset($closedtags[array_search($openedtags[$i],$closedtags)]); }
else array_push($tags, $openedtags[$i]);
}
$tags=array_reverse($tags); //now this reversion is done again for a better order of close-tags
//prepare the close-tags for output
for($x=0;$x<count($tags);$x++) {
$add=strtolower(trim($tags[$x]));
if(!in_array($add,$donotclose)) $tagstoclose.='</'.$add.'>';
}
//and finally
return $string . $tagstoclose;
}
Then change the word_limiter() function to this:
function word_limiter($str, $n = 100, $end_char = '…')
{
if (strlen($str) < $n)
{
return closeTags($str);
}
$words = explode(' ', preg_replace("/\s+/", ' ', preg_replace("/(\r\n|\r|\n)/", " ", $str)));
if (count($words) <= $n)
{
return closeTags($str);
}
$str = '';
for ($i = 0; $i < $n; $i++)
{
$str .= $words[$i].' ';
}
$str = closeTags($str);
return trim($str).$end_char;
}
And that closes the tags in the correct order! :)