这是什么不适合我:
- <?PHP
- $string = 'I have a dog and his name is <a href="http://www.jackismydog.com">Jack</a> and I love him very much because he\'s my favorite dog in the whole wide world and nothing could make me not love him,I think.';
- $limited = substr($string,100).'...';
- echo $string;
- ?>
我想将VISIBLE文本限制为100个字符,但使用substr()还包括限制中的不可见文本(< a href =“http://www.jackismydog.com”>和< / a>)占用了100个可用字符中的41个.
有没有办法限制文本,以便链接中的单词“杰克”将包含在限制中,但不包括< a href =“http://www.jackismydog.com”>或< / a>?
编辑:
我想保留字符串中的链接,只是不计算它的限制长度..
截断HTML代码中单词的函数:
- //+ Jonas Raoni Soares Silva
- //@ http://jsfromhell.com
- function truncate($text,$length,$suffix = '…',$isHTML = true) {
- $i = 0;
- $simpleTags=array('br'=>true,'hr'=>true,'input'=>true,'image'=>true,'link'=>true,'Meta'=>true);
- $tags = array();
- if($isHTML){
- preg_match_all('/<[^>]+>([^<]*)/',$text,$m,PREG_OFFSET_CAPTURE | PREG_SET_ORDER);
- foreach($m as $o){
- if($o[0][1] - $i >= $length)
- break;
- $t = substr(strtok($o[0][0]," \t\n\r\0\x0B>"),1);
- // test if the tag is unpaired,then we mustn't save them
- if($t[0] != '/' && (!isset($simpleTags[$t])))
- $tags[] = $t;
- elseif(end($tags) == substr($t,1))
- array_pop($tags);
- $i += $o[1][1] - $o[0][1];
- }
- }
- // output without closing tags
- $output = substr($text,$length = min(strlen($text),$length + $i));
- // closing tags
- $output2 = (count($tags = array_reverse($tags)) ? '</' . implode('></',$tags) . '>' : '');
- // Find last space or HTML tag (solving problem with last space in HTML tag eg. <span class="new">)
- $pos = (int)end(end(preg_split('/<.*>| /',$output,-1,PREG_SPLIT_OFFSET_CAPTURE)));
- // Append closing tags to output
- $output.=$output2;
- // Get everything until last space
- $one = substr($output,$pos);
- // Get the rest
- $two = substr($output,$pos,(strlen($output) - $pos));
- // Extract all tags from the last bit
- preg_match_all('/<(.*?)>/s',$two,$tags);
- // Add suffix if needed
- if (strlen($text) > $length) { $one .= $suffix; }
- // Re-attach tags
- $output = $one . implode($tags[0]);
- //added to remove unnecessary closure
- $output = str_replace('</!-->','',$output);
- return $output;
- }