View helper Truncate
1 2 3 4 56 7 8 9 1011 12 13 14 1516 17 18 19 2021 22 23 24 2526 27 28 29 3031 32 33 34 3536 37 38 39 4041 42 43 44 4546 47 48 49 5051 52 53 54 5556 57 58 59 6061 62 63 64 6566 67 68 69 7071 72 73 74 7576 77 78 79 8081 82 83 84 8586 87 88 89 9091 92 93 94 9596 97 | <?php /** * @copyright 2008, IgorN * @author IgorN (progi2007@gmail.com) */class Application_Helper_View_Truncate { /** * 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 $considerHtml If true, HTML tags would be handled correctly * @return string Trimmed string. */ public function truncate($text, $length = 150, $ending = '...', $exact = false, $considerHtml = false) { if ($considerHtml) { if (strlen(preg_replace('/<.*?>/', '', $text)) <= $length) { return $text; } preg_match_all('/(<.+?>)?([^<>]*)/s', $text, $lines, PREG_SET_ORDER); $total_length = strlen($ending); $open_tags = array(); $truncate = ''; foreach ($lines as $line_matchings) { if (!empty($line_matchings[1])) { if (preg_match('/^<(s*.+?/s*|s*(img|br|input|hr|area|base|basefont|col|frame|isindex|link|meta|param)(s.+?)?)>$/is', $line_matchings[1])) { } else if (preg_match('/^<s*/([^s]+?)s*>$/s', $line_matchings[1], $tag_matchings)) { $pos = array_search($tag_matchings[1], $open_tags); if ($pos !== false) { unset($open_tags[$pos]); } } else if (preg_match('/^<s*([^s>!]+).*?>$/s', $line_matchings[1], $tag_matchings)) { array_unshift($open_tags, strtolower($tag_matchings[1])); } $truncate .= $line_matchings[1]; } $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) { $left = $length - $total_length; $entities_length = 0; if (preg_match_all('/&[0-9a-z]{2,8};|&#[0-9]{1,7};|&#x[0-9a-f]{1,6};/i', $line_matchings[2], $entities, PREG_OFFSET_CAPTURE)) { foreach ($entities[0] as $entity) { if ($entity[1]+1-$entities_length <= $left) { $left--; $entities_length += strlen($entity[0]); } else { break; } } } $truncate .= substr($line_matchings[2], 0, $left+$entities_length); break; } else { $truncate .= $line_matchings[2]; $total_length += $content_length; } if($total_length >= $length) { break; } } } else { if (strlen($text) <= $length) { return $text; } else { $truncate = substr($text, 0, $length - strlen($ending)); } } if (!$exact) { $spacepos = strrpos($truncate, ' '); if (isset($spacepos)) { $truncate = substr($truncate, 0, $spacepos); } } $truncate .= $ending; if($considerHtml) { foreach ($open_tags as $tag) { $truncate .= '</' . $tag . '>'; } } return $truncate; }} ?> |
Comments
In case $considerHtml equals to false then I think that it would be better to strip out all html tags so in case the text would start with something like this:
<br /><br /><strong>Some Text here and etc etc</strong> the two breaks will render and they may break your layout so I would suggest to change this:
} else {
if ( strlen ( $text ) <= $length ) {
Into this:
} else {
$text = trim(preg_replace(\'%</?\\w+((\\s+\\w+(\\s*=\\s*(?:\".*?\"|\\\'.*?\\\'|[^\\\'\">\\s]+))?)+\\s*|\\s*)/?>%ix\', \'\', $text));
if ( strlen ( $text ) <= $length ) {
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1 year ago
Might be a good idea to switch this:
$ending = '...'
to
$ending = '…'
and move that argument to the end of the list.