Question

我需要计算span标签中的单词数量......文本通常类似于

This<span class="highlight_word"> function is useful to highlight words from a simple non-html </span>text.The<span class="highlight_word"><span class="highlight_word"><span class="highlight_word"> regular expression, as a pattern, can match all kinds of text strings helping your application </span></span>validate, compare, compute, decide etc\. </span>With<span class="highlight_word"><span class="highlight_word"><span class="highlight_word"> the temperature up on keywords and searches, many sites have opted </span></span>for highlighting the keywords from their searches\. This can be useful for quickly finding relavant words withing large pages of text\. </span>

任何人都可以指导我如何计算span标签中的单词数量。

由于

Answer 1

在服务器端，以下计算一个计数器中span标记中的单词，但您可以对所有span元素单独执行此操作。

$text = 'This<span class="highlight_word"> function is useful to highlight words from a simple non-html </span>text.The<span class="highlight_word"><span class="highlight_word"><span class="highlight_word"> regular expression, as a pattern, can match all kinds of text strings helping your application </span></span>validate, compare, compute, decide etc\. </span>With<span class="highlight_word"><span class="highlight_word"><span class="highlight_word"> the temperature up on keywords and searches, many sites have opted </span></span>for highlighting the keywords from their searches\. This can be useful for quickly finding relavant words withing large pages of text\. </span>';
$words = 0;
preg_match_all("'span[^>]*[>]([^<]+?)[<]/span'is",$text,$matches);
foreach ($matches[1] as $v)
{
    $words += count(explode(" ",trim($v)));
}

更新：我有点损坏了正则表达式

Answer 2

可以使用以下两个函数来完成

function getTextBetweenTags($string, $tagname)
 {
    $pattern = "/<$tagname>(.*?)<\/$tagname>/";
    preg_match($pattern, $string, $matches);
    return $matches[1];
 }


function count_words($str) 
 {
 $no = count(explode(" ",$str));
 return $no;
 }

计算span标记内的单词

2 个答案: