El rincon de palangano

Y si, para un sitio que hice (un blog), en la pagina de listado tenia el primer pedazo de cada post cortado a, digamos 600 caracteres… el problema: abria un div y no lo cerraba y me cortaba justo al medio. Como estoy usando cakephp termine con la siguiente solucion:

agregar en views/helpers/advtext.php

class AdvtextHelper extends Helper { /** * Truncates text. * * Cuts a string to the length of $length and replaces the last characters * with the ending if the text is longer than length. * * @param string  $text String to truncate. * @param integer $length Length of returned string, including ellipsis. * @param string  $ending Ending to be appended to the trimmed string. * @param boolean $exact If false, $text will not be cut mid-word * @param boolean $considerHtml If true, HTML tags would be handled correctly * @return string Trimmed string. */ function truncate($text, $length = 100, $ending = '...', $exact = true, $considerHtml = false) {        if ($considerHtml) {            // if the plain text is shorter than the maximum length, return the whole text            if (strlen(preg_replace('/<.*?>/', '', $text)) <= $length) {                return $text;            }

            // splits all html-tags to scanable lines            preg_match_all('/(<.+?>)?([^<>]*)/s', $text, $lines, PREG_SET_ORDER);

            $total_length = strlen($ending);            $open_tags = array();            $truncate = '';

            foreach ($lines as $line_matchings) {                // if there is any html-tag in this line, handle it and add it (uncounted) to the output                if (!empty($line_matchings[1])) {                    // if it's an "empty element" with or without xhtml-conform closing slash (f.e. )                    if (preg_match('/^<(\s*.+?\/\s*|\s*(img|br|input|hr|area|base|basefont|col|frame|isindex|link|meta|param)(\s.+?)?)>$/is', $line_matchings[1])) {                        // do nothing                    // if tag is a closing tag (f.e. )                    } else if (preg_match('/^<\s*\/([^\s]+?)\s*>$/s', $line_matchings[1], $tag_matchings)) {                        // delete tag from $open_tags list                        $pos = array_search($tag_matchings[1], $open_tags);                        if ($pos !== false) {                            unset($open_tags[$pos]);                        }                    // if tag is an opening tag (f.e. <b>)                    } else if (preg_match('/^<\s*([^\s>!]+).*?>$/s', $line_matchings[1], $tag_matchings)) {                        // add tag to the beginning of $open_tags list                        array_unshift($open_tags, strtolower($tag_matchings[1]));                    }                    // add html-tag to $truncate'd text                    $truncate .= $line_matchings[1];                }

                // calculate the length of the plain text part of the line; handle entities as one character                $content_length = strlen(preg_replace('/&[0-9a-z]{2,8};|&#[0-9]{1,7};|&#x[0-9a-f]{1,6};/i', ' ', $line_matchings[2]));                if ($total_length+$content_length > $length) {                    // the number of characters which are left                    $left = $length - $total_length;                    $entities_length = 0;                    // search for html entities                    if (preg_match_all('/&[0-9a-z]{2,8};|&#[0-9]{1,7};|&#x[0-9a-f]{1,6};/i', $line_matchings[2], $entities, PREG_OFFSET_CAPTURE)) {                        // calculate the real length of all entities in the legal range                        foreach ($entities[0] as $entity) {                            if ($entity[1]+1-$entities_length <= $left) {                                $left--;                                $entities_length += strlen($entity[0]);                            } else {                                // no more characters left                                break;                            }                        }                    }                    $truncate .= substr($line_matchings[2], 0, $left+$entities_length);                    // maximum lenght is reached, so get off the loop                    break;                } else {                    $truncate .= $line_matchings[2];                    $total_length += $content_length;                }

                // if the maximum length is reached, get off the loop                if($total_length >= $length) {                    break;                }            }        } else {            if (strlen($text) <= $length) {                return $text;            } else {                $truncate = substr($text, 0, $length - strlen($ending));            }        }

        // if the words shouldn't be cut in the middle...  if (!$exact) {            // ...search the last occurance of a space...   $spacepos = strrpos($truncate, ' ');   if (isset($spacepos)) {                // ...and cut the text in this position    $truncate = substr($truncate, 0, $spacepos);   }  }

        // add the defined ending to the text  $truncate .= $ending;

        if($considerHtml) {            // close all unclosed html-tags            foreach ($open_tags as $tag) {                $truncate .= '';            }        }

  return $truncate;

 }}?>

el helper, se usa igual que html->truncate, pero con un parametro extra, que en true toma en cuenta el html para le truncado, y hasta lo cierra bien y todo.

<?=$advtext->truncate($text,600,’[...]‘,false,true)?> asi lo uso yo.